Common Weakness Enumeration

CWE-252

Allowed

Unchecked Return Value

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions.

124 vulnerabilities reference this CWE, most recent first.

CVE-2026-67409 (GCVE-0-2026-67409)

Vulnerability from cvelistv5 – Published: 2026-09-25 16:18 – Updated: 2026-09-25 17:49
VLAI
Title
RabbitMQ: JWKS Fetch Ignores HTTP Response Status Code - Signing Key Destruction Causes Authentication DoS
Summary
RabbitMQ is a messaging and streaming broker. From 3.13.0 until 4.3.3, 4.2.9, 4.1.14, 4.0.23, and 3.13.18, JWKS Fetch Ignores HTTP Response Status Code - Signing Key Destruction Causes Authentication DoS (CWE-252). the JWKS key fetching mechanism in uaajwt.erl does not validate the HTTP response status code when downloading signing keys from the OAuth2 provider's JWKS endpoint. Non-200 responses (including 4xx and 5xx errors) are processed identically to successful responses. When the JWKS endpoint returns an error response with a valid-JSON body that lacks a keys field, all previously cached signing keys are destroyed, causing a persistent authentication denial of Files: deps/rabbitmqauthbackendoauth2/src/uaajwt.erl, lines 50-63 deps/rabbitmqauthbackendoauth2/src/uaajwks.erl, lines 5-7 deps/rabbitmqauthbackendoauth2/src/rabbitoauth2provider.erl, lines 98-107 Bug 1: HTTP status code ignored (uaajwt.erl:50-63): The Erlang httpc module returns {ok, {{HttpVersion, StatusCode, ReasonPhrase}, Headers, Body}}. The pattern {ok, {, , JwksBody}} matches ANY successful HTTP transaction Persistent authentication DoS: Once keys are destroyed, ALL OAuth2/JWT authentication fails for all users until a new successful JWKS refresh occurs Amplification: A single attacker can deny access to all legitimate OAuth2 users across the entire RabbitMQ. This issue is fixed in versions 4.3.3, 4.2.9, 4.1.14, 4.0.23, and 3.13.18.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 17:49 UTC
CWE
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
rabbitmq rabbitmq-server Affected: >= 4.3.0, < 4.3.3
Affected: >= 4.2.0, < 4.2.9
Affected: >= 4.1.0, < 4.1.14
Affected: >= 4.0.0, < 4.0.23
Affected: >= 3.13.0, < 3.13.18
Create a notification for this product.
Show details on NVD website
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CVE-2026-62909 (GCVE-0-2026-62909)

Vulnerability from cvelistv5 – Published: 2026-08-11 17:04 – Updated: 2026-10-30 17:20
VLAI
Title
.NET Elevation of Privilege Vulnerability
Summary
Uncaught exception in .NET allows an authorized attacker to elevate privileges locally.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 03:55 UTC
CWE
Assigner
microsoft CNA
References
Impacted products
Date Public
2026-08-11 14:00
Show details on NVD website
To clipboard 

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CVE-2026-61857 (GCVE-0-2026-61857)

Vulnerability from cvelistv5 – Published: 2026-07-11 13:01 – Updated: 2026-10-29 21:16
VLAI
Title
ImageMagick before 7.1.2-26 Heap Use-After-Free via XMP
Summary
ImageMagick before 7.1.2-26 contains a heap use-after-free vulnerability caused by missing null check when parsing XMP profiles. Attackers can craft malicious image files with specially crafted XMP data to trigger the vulnerability and cause application crashes.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-13 17:06 UTC
CWE
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
ImageMagick ImageMagick Affected: 7.0.0 , < 7.1.2-26 (semver)
Unaffected: 7.1.2-26 (semver)
Create a notification for this product.
ImageMagick ImageMagick Affected: 0 , < 6.9.13-51 (semver)
Unaffected: 6.9.13-51 (semver)
Create a notification for this product.
Date Public
2026-06-26 00:00
Credits
rexpository
Show details on NVD website
To clipboard 

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CVE-2026-56388 (GCVE-0-2026-56388)

Vulnerability from cvelistv5 – Published: 2026-10-21 11:40 – Updated: 2026-10-30 13:57
VLAI
Title
Apache bRPC: Out-of-Bounds Write in Redis Command Parser
Summary
The Redis server command parser in Apache bRPC accepts an empty RESP array as a command header. A remote unauthenticated attacker who can reach a bRPC server with Redis service enabled can send an empty array header followed by a bulk string, causing an out-of-bounds write in the parser and crashing the process. Root Cause: RedisCommandParser::ConsumeImpl rejected negative RESP array counts but accepted zero. It resized the command argument vector to zero elements and continued parsing. When a following bulk string was parsed, the only index guard was a CHECK. In configurations where fatal logs do not abort immediately, execution could continue and write to _args[0] even though the vector was empty. Affected Scenarios: Deployments that enable ServerOptions.redis_service and accept Redis protocol traffic from untrusted clients. The issue is reached during parsing before command handling or authentication. How to Fix: 1. Upgrade bRPC to version 1.18.0, which fixes this issue. 2. Apply this patch: https://github.com/apache/brpc/pull/3354 Note: The fix rejects empty RESP arrays as invalid Redis commands and replaces the internal index CHECK with an explicit parse error so malformed command streams cannot fall through to an indexed vector write.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 13:57 UTC
CWE
Assigner
apache CNA
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache bRPC Affected: 0 , < 1.18.0 (semver)
Create a notification for this product.
Credits
Nikko Enggaliano Pratama
Show details on NVD website
To clipboard 

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CVE-2026-48741 (GCVE-0-2026-48741)

Vulnerability from cvelistv5 – Published: 2026-10-16 15:45 – Updated: 2026-10-21 02:22
VLAI
Title
libIEC61850: Remote NULL dereference in MMS Read alternate-access sub-array path leads to server-side DoS
Summary
libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. Prior to 1.6.2, alternateArrayAccess in src/mms/iso_mms/server/mms_read_service.c does not validate an alternate-access sub-array range when numberOfElements is greater than zero. An out-of-range MmsValue_getElement call returns NULL, and the sub-array branch passes that value to MmsValue_isDeletable, causing a NULL pointer dereference. A remote MMS Read request can therefore crash servers whose data models contain arrays, while the single-element error path handles the same invalid index safely. This issue is fixed in version 1.6.2.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-21 02:22 UTC
CWE
  • CWE-129 - Improper Validation of Array Index
  • CWE-252 - Unchecked Return Value
  • CWE-476 - NULL Pointer Dereference
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
GitHub_M CNA
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2026-48503 (GCVE-0-2026-48503)

Vulnerability from cvelistv5 – Published: 2026-10-16 15:44 – Updated: 2026-10-16 16:50
VLAI
Title
libIEC61850: Remote information disclosure in MMS file service via out-of-range initialPosition in fileOpen followed by fileRead
Summary
libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. Prior to 1.6.2, the MMS file service in src/mms/iso_mms/server/mms_file_service.c accepts an out-of-range initialPosition in fileOpen and stores it in the file-read state. The fileRead path then subtracts the larger read position from the file size using unsigned arithmetic and fails to limit the response to the actual FileSystem_readFile return value. The oversized response can include stale bytes from the reused connection buffer after the requested file contents, disclosing prior response data and protocol fragments to an unauthenticated remote client when the file service is enabled. This issue is fixed in version 1.6.2.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 16:50 UTC
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-252 - Unchecked Return Value
Assigner
GitHub_M CNA
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2026-47245 (GCVE-0-2026-47245)

Vulnerability from cvelistv5 – Published: 2026-08-18 15:51 – Updated: 2026-08-18 17:37
VLAI
Title
MyBB: Buddy list corruption
Summary
MyBB is free and open source forum software. Prior to 1.8.40, the User CP Buddy/Ignore List component does not validate reciprocal buddy-list updates correctly. The usercp.php?action=do_editlists delete handler removes the selected entry from the acting user's list and then updates mybb_users.buddylist for the target account. The reciprocal update searches for the deleted target UID instead of the acting user's UID and uses the unchecked array_search() return value as an array key. A false result can be converted to index 0, removing the target account's first stored buddy while leaving the actual reciprocal entry unchanged. The uniquely identifying implementation details include false converted to index 0. This issue is fixed in version 1.8.40.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 17:37 UTC
CWE
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
mybb mybb Affected: < 1.8.40
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-46521 (GCVE-0-2026-46521)

Vulnerability from cvelistv5 – Published: 2026-06-10 21:40 – Updated: 2026-06-11 13:13
VLAI
Title
ImageMagick: Heap Buffer Over-Write in MIFF encoder when using LZMA compression
Summary
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, when using LZMA compression in the MIFF encoder an out of bounds write can occur due to a missing check. This issue has been patched in versions 6.9.13-48 and 7.1.2-23.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-11 13:13 UTC
CWE
  • CWE-131 - Incorrect Calculation of Buffer Size
  • CWE-252 - Unchecked Return Value
  • CWE-787 - Out-of-bounds Write
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
ImageMagick ImageMagick Affected: < 6.9.13-48
Affected: < 7.1.2-23
Create a notification for this product.
Show details on NVD website
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CVE-2026-40092 (GCVE-0-2026-40092)

Vulnerability from cvelistv5 – Published: 2026-05-20 21:16 – Updated: 2026-05-21 12:23
VLAI
Title
nimiq-keys: Unchecked Ed25519 signature length in TaggedPublicKey::verify causes remote node panic via DHT
Summary
nimiq-blockchain provides persistent block storage for Nimiq's Rust implementation. In versions 1.3.0 and below, a malicious network peer can crash any Nimiq full node by publishing a crafted Kademlia DHT record. The maliciously crafted record would contain a TaggedSigned<ValidatorRecord, KeyPair> with a signature field whose byte length is not exactly 64 in order to cause a crash. When the victim node's DHT verifier calls TaggedSigned::verify, execution reaches Ed25519Signature::from_bytes(sig).unwrap() in the TaggedPublicKey implementation for Ed25519PublicKey. The from_bytes call fails because ed25519_zebra::Signature::try_from rejects slices not 64 bytes, and the unwrap() panics. The BLS TaggedPublicKey implementation correctly returns false on error; only the Ed25519 implementation panics. This issue has been fixed in version 1.4.0.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-21 12:23 UTC
CWE
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
nimiq core-rs-albatross Affected: < 1.4.0
Create a notification for this product.
Show details on NVD website
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CVE-2026-40060 (GCVE-0-2026-40060)

Vulnerability from cvelistv5 – Published: 2026-05-13 14:12 – Updated: 2026-05-13 16:12
VLAI
Title
BIG-IP Advanced WAF and ASM vulnerability
Summary
When a BIG-IP Advanced WAF or ASM security policy is configured on a virtual server, undisclosed requests can cause the bd process to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 16:02 UTC
CWE
Assigner
f5 CNA
References
URL Tags
https://my.f5.com/manage/s/article/K000160727 vendor-advisorypatch
Impacted products
Vendor Product Version
F5 BIG-IP Unaffected: 21.1.0 , < * (custom)
Affected: 21.0.0 , < 21.0.0.1 (custom)
Affected: 17.5.0 , < 17.5.1.4 (custom)
Affected: 17.1.0 , < 17.1.3.1 (custom)
Affected: 16.1.0 , < * (custom)
Create a notification for this product.
Date Public
2026-05-13 14:00
Credits
F5
Show details on NVD website
To clipboard 

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        "dateUpdated": "2026-05-13T14:12:35.775Z",
        "orgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
        "shortName": "f5"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "patch"
          ],
          "url": "https://my.f5.com/manage/s/article/K000160727"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "title": "BIG-IP Advanced WAF and ASM vulnerability",
      "x_generator": {
        "engine": "F5 SIRTBot v1.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
    "assignerShortName": "f5",
    "cveId": "CVE-2026-40060",
    "datePublished": "2026-05-13T14:12:35.775Z",
    "dateReserved": "2026-04-30T23:04:10.878Z",
    "dateUpdated": "2026-05-13T16:12:34.820Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
Mitigation MIT-53
Implementation

Check the results of all functions that return a value and verify that the value is expected.

Mitigation MIT-56
Implementation

For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].

Mitigation
Implementation

Ensure that you account for all possible return values from the function.

Mitigation
Implementation

When designing a function, make sure you return a value or throw an exception in case of an error.

No CAPEC attack patterns related to this CWE.

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