Common Weakness Enumeration
CWE-912
Allowed-with-ReviewHidden Functionality
Abstraction: Class · Status: Incomplete
The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators.
83 vulnerabilities reference this CWE, most recent first.
CVE-2017-20082 (GCVE-0-2017-20082)
Vulnerability from cvelistv5 – Published: 2022-06-22 06:10 – Updated: 2025-04-15 14:15
VLAI
EPSS
VEX
Title
JUNG Smart Visu Server backdoor
Summary
A vulnerability, which was classified as problematic, has been found in JUNG Smart Visu Server 1.0.804/1.0.830/1.0.832. This issue affects some unknown processing. The manipulation leads to backdoor. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. Upgrading to version 1.0.900 is able to address this issue. It is recommended to upgrade the affected component.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-14 17:09 UTC
CWE
- CWE-912 - Backdoor
Assigner
VulDB
CNA
References
2 references
| URL | Tags |
|---|---|
| http://seclists.org/fulldisclosure/2017/Feb/18 | x_refsource_MISC |
| https://vuldb.com/?id.96815 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| JUNG | Smart Visu Server |
Affected:
1.0.804
Affected: 1.0.830 Affected: 1.0.832 |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-05T21:45:25.349Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "http://seclists.org/fulldisclosure/2017/Feb/18"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://vuldb.com/?id.96815"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2017-20082",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-04-14T17:09:09.795706Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-04-15T14:15:53.980Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Smart Visu Server",
"vendor": "JUNG",
"versions": [
{
"status": "affected",
"version": "1.0.804"
},
{
"status": "affected",
"version": "1.0.830"
},
{
"status": "affected",
"version": "1.0.832"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "T. Weber"
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability, which was classified as problematic, has been found in JUNG Smart Visu Server 1.0.804/1.0.830/1.0.832. This issue affects some unknown processing. The manipulation leads to backdoor. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. Upgrading to version 1.0.900 is able to address this issue. It is recommended to upgrade the affected component."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-912",
"description": "CWE-912 Backdoor",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-06-22T06:10:14.000Z",
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "http://seclists.org/fulldisclosure/2017/Feb/18"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://vuldb.com/?id.96815"
}
],
"title": "JUNG Smart Visu Server backdoor",
"x_generator": "vuldb.com",
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "cna@vuldb.com",
"ID": "CVE-2017-20082",
"REQUESTER": "cna@vuldb.com",
"STATE": "PUBLIC",
"TITLE": "JUNG Smart Visu Server backdoor"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Smart Visu Server",
"version": {
"version_data": [
{
"version_value": "1.0.804"
},
{
"version_value": "1.0.830"
},
{
"version_value": "1.0.832"
}
]
}
}
]
},
"vendor_name": "JUNG"
}
]
}
},
"credit": "T. Weber",
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "A vulnerability, which was classified as problematic, has been found in JUNG Smart Visu Server 1.0.804/1.0.830/1.0.832. This issue affects some unknown processing. The manipulation leads to backdoor. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. Upgrading to version 1.0.900 is able to address this issue. It is recommended to upgrade the affected component."
}
]
},
"generator": "vuldb.com",
"impact": {
"cvss": {
"baseScore": "5.5",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-912 Backdoor"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "http://seclists.org/fulldisclosure/2017/Feb/18",
"refsource": "MISC",
"url": "http://seclists.org/fulldisclosure/2017/Feb/18"
},
{
"name": "https://vuldb.com/?id.96815",
"refsource": "MISC",
"url": "https://vuldb.com/?id.96815"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2017-20082",
"datePublished": "2022-06-22T06:10:15.000Z",
"dateReserved": "2022-06-19T00:00:00.000Z",
"dateUpdated": "2025-04-15T14:15:53.980Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2011-10018 (GCVE-0-2011-10018)
Vulnerability from cvelistv5 – Published: 2025-08-13 20:35 – Updated: 2026-04-07 14:02
VLAI
EPSS
VEX
Title
myBB 1.6.4 Backdoor Arbitrary Command Execution
Summary
myBB version 1.6.4 was distributed with an unauthorized backdoor embedded in the source code. The backdoor allowed remote attackers to execute arbitrary PHP code by injecting payloads into a specially crafted collapsed cookie. This vulnerability was introduced during packaging and was not part of the intended application logic. Exploitation requires no authentication and results in full compromise of the web server under the context of the web application.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-14 14:07 UTC
CWE
Assigner
VulnCheck
CNA
References
5 references
| URL | Tags |
|---|---|
| https://raw.githubusercontent.com/rapid7/metasplo… | exploit |
| https://www.exploit-db.com/exploits/17949 | exploit |
| https://web.archive.org/web/20111015224948/http:/… | third-party-advisory |
| https://blog.mybb.com/2011/10/06/1-6-4-security-v… | vendor-advisorypatch |
| https://www.vulncheck.com/advisories/mybb-backdoo… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| myBB Group | Forum Software |
Affected:
1.6.4
cpe:2.3:a:mybb:mybb:1.6.4:*:*:*:*:*:*:* |
Date Public
2011-10-09 00:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2011-10018",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-08-14T14:07:57.715204Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-08-14T14:08:01.308Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/mybb_backdoor.rb"
},
{
"tags": [
"exploit"
],
"url": "https://www.exploit-db.com/exploits/17949"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"modules": [
"index.php",
"collapsed cookie"
],
"product": "Forum Software",
"vendor": "myBB Group",
"versions": [
{
"status": "affected",
"version": "1.6.4"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mybb:mybb:1.6.4:*:*:*:*:*:*:*",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "MyBB"
}
],
"datePublic": "2011-10-09T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "myBB version 1.6.4 was distributed with an unauthorized backdoor embedded in the source code. The backdoor allowed remote attackers to execute arbitrary PHP code by injecting payloads into a specially crafted collapsed cookie. This vulnerability was introduced during packaging and was not part of the intended application logic. Exploitation requires no authentication and results in full compromise of the web server under the context of the web application."
}
],
"value": "myBB version 1.6.4 was distributed with an unauthorized backdoor embedded in the source code. The backdoor allowed remote attackers to execute arbitrary PHP code by injecting payloads into a specially crafted collapsed cookie. This vulnerability was introduced during packaging and was not part of the intended application logic. Exploitation requires no authentication and results in full compromise of the web server under the context of the web application."
}
],
"impacts": [
{
"capecId": "CAPEC-242",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-242 Code Injection"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 10,
"baseSeverity": "CRITICAL",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-912",
"description": "CWE-912 Hidden Functionality",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-94",
"description": "CWE-94 Improper Control of Generation of Code (\u0027Code Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-07T14:02:09.269Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/mybb_backdoor.rb"
},
{
"tags": [
"exploit"
],
"url": "https://www.exploit-db.com/exploits/17949"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://web.archive.org/web/20111015224948/http://secunia.com/advisories/46300/"
},
{
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://blog.mybb.com/2011/10/06/1-6-4-security-vulnerabilit/"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/mybb-backdoor-arbitrary-command-execution"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "myBB 1.6.4 Backdoor Arbitrary Command Execution",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2011-10018",
"datePublished": "2025-08-13T20:35:31.755Z",
"dateReserved": "2025-08-13T17:52:08.905Z",
"dateUpdated": "2026-04-07T14:02:09.269Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2010-20103 (GCVE-0-2010-20103)
Vulnerability from cvelistv5 – Published: 2025-08-20 15:38 – Updated: 2026-07-15 01:23 X_Known Exploited Vulnerability
VLAI
EPSS
VEX
Title
ProFTPD 1.3.3c Backdoor Command Execution
Summary
A malicious backdoor was embedded in the official ProFTPD 1.3.3c source tarball distributed between November 28 and December 2, 2010. The backdoor implements a hidden FTP command trigger that, when invoked, causes the server to execute arbitrary shell commands with root privileges. This allows remote, unauthenticated attackers to run any OS command on the FTP server host.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-22 15:44 UTC
CWE
- CWE-912 - Hidden Functionality
Assigner
VulnCheck
CNA
References
8 references
| URL | Tags |
|---|---|
| https://web.archive.org/web/20111107212129/http:/… | vendor-advisorypatch |
| https://raw.githubusercontent.com/rapid7/metasplo… | exploit |
| https://www.exploit-db.com/exploits/15662 | exploit |
| https://www.exploit-db.com/exploits/16921 | exploit |
| https://advisories.checkpoint.com/defense/advisor… | third-party-advisory |
| https://github.com/proftpd/proftpd | product |
| http://www.proftpd.org/ | product |
| https://www.vulncheck.com/advisories/proftpd-back… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ProFTPD Project | ProFTPD (Professional FTP Daemon) |
Affected:
1.3.3c
cpe:2.3:a:proftpd:proftpd:1.3.3c:*:*:*:*:*:*:* |
Date Public
2010-12-02 00:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2010-20103",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-08-22T15:44:16.891816Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-08-22T15:44:20.670Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://www.exploit-db.com/exploits/16921"
},
{
"tags": [
"exploit"
],
"url": "https://www.exploit-db.com/exploits/15662"
},
{
"tags": [
"exploit"
],
"url": "https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/ftp/proftpd_133c_backdoor.rb"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"modules": [
"core daemon"
],
"packageURL": "pkg:github/proftpd/proftpd",
"product": "ProFTPD (Professional FTP Daemon)",
"repo": "https://github.com/proftpd/proftpd",
"vendor": "ProFTPD Project",
"versions": [
{
"status": "affected",
"version": "1.3.3c"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:proftpd:proftpd:1.3.3c:*:*:*:*:*:*:*",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
}
],
"datePublic": "2010-12-02T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eA malicious backdoor was embedded in the official ProFTPD 1.3.3c source tarball distributed between November 28 and December 2, 2010. The backdoor implements a hidden FTP command trigger that, when invoked, causes the server to execute arbitrary shell commands with root privileges. This allows remote, unauthenticated attackers to run any OS command on the FTP server host.\u003c/p\u003e"
}
],
"value": "A malicious backdoor was embedded in the official ProFTPD 1.3.3c source tarball distributed between November 28 and December 2, 2010. The backdoor implements a hidden FTP command trigger that, when invoked, causes the server to execute arbitrary shell commands with root privileges. This allows remote, unauthenticated attackers to run any OS command on the FTP server host."
}
],
"impacts": [
{
"capecId": "CAPEC-88",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-88 OS Command Injection"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-912",
"description": "CWE-912 Hidden Functionality",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-15T01:23:11.729Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"tags": [
"vendor-advisory",
"patch"
],
"url": "https://web.archive.org/web/20111107212129/http://rsync.proftpd.org/"
},
{
"tags": [
"exploit"
],
"url": "https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/ftp/proftpd_133c_backdoor.rb"
},
{
"tags": [
"exploit"
],
"url": "https://www.exploit-db.com/exploits/15662"
},
{
"tags": [
"exploit"
],
"url": "https://www.exploit-db.com/exploits/16921"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://advisories.checkpoint.com/defense/advisories/public/2011/cpai-2010-151.html/"
},
{
"tags": [
"product"
],
"url": "https://github.com/proftpd/proftpd"
},
{
"tags": [
"product"
],
"url": "http://www.proftpd.org/"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/proftpd-backdoor-command-execution"
}
],
"source": {
"discovery": "UNKNOWN"
},
"tags": [
"x_known-exploited-vulnerability"
],
"title": "ProFTPD 1.3.3c Backdoor Command Execution",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2010-20103",
"datePublished": "2025-08-20T15:38:46.697Z",
"dateReserved": "2025-08-19T16:00:37.400Z",
"dateUpdated": "2026-07-15T01:23:11.729Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Installation
Always verify the integrity of the product that is being installed.
CAPEC-133: Try All Common Switches
An attacker attempts to invoke all common switches and options in the target application for the purpose of discovering weaknesses in the target. For example, in some applications, adding a --debug switch causes debugging information to be displayed, which can sometimes reveal sensitive processing or configuration information to an attacker. This attack differs from other forms of API abuse in that the attacker is indiscriminately attempting to invoke options in the hope that one of them will work rather than specifically targeting a known option. Nonetheless, even if the attacker is familiar with the published options of a targeted application this attack method may still be fruitful as it might discover unpublicized functionality.
CAPEC-190: Reverse Engineer an Executable to Expose Assumed Hidden Functionality
An attacker analyzes a binary file or executable for the purpose of discovering the structure, function, and possibly source-code of the file by using a variety of analysis techniques to effectively determine how the software functions and operates. This type of analysis is also referred to as Reverse Code Engineering, as techniques exist for extracting source code from an executable. Several techniques are often employed for this purpose, both black box and white box. The use of computer bus analyzers and packet sniffers allows the binary to be studied at a level of interactions with its computing environment, such as a host OS, inter-process communication, and/or network communication. This type of analysis falls into the 'black box' category because it involves behavioral analysis of the software without reference to source code, object code, or protocol specifications.