CVE-2026-20288 (GCVE-0-2026-20288)
Vulnerability from cvelistv5
Published
2026-08-05 16:27
Modified
2026-08-06 03:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-146 - Improper Neutralization of Expression/Command Delimiters
Summary
A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with Admin privileges to execute arbitrary commands on the underlying operating system of an affected system and elevate privileges to root.
This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by entering crafted inputs to the web-based management interface of the affected software. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system as the root user.
Cisco has assigned this vulnerability a SIR of High rather than Medium as the score indicates because additional security implications could occur when the attacker becomes root.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco Unified Computing System (Standalone) |
Version: 4.0(2g) Version: 3.1(2i) Version: 3.1(1d) Version: 4.0(4i) Version: 4.1(1c) Version: 4.0(2c) Version: 4.0(1e) Version: 4.0(2h) Version: 4.0(4h) Version: 4.0(1h) Version: 4.0(2l) Version: 3.1(3g) Version: 4.0(1.240) Version: 4.0(2f) Version: 4.0(1g) Version: 4.0(2i) Version: 3.1(3i) Version: 4.0(4d) Version: 4.1(1d) Version: 3.1(3c) Version: 4.0(4k) Version: 3.1(2d) Version: 3.1(3a) Version: 3.1(3j) Version: 4.0(2d) Version: 4.1(1f) Version: 4.0(4j) Version: 4.0(2m) Version: 4.0(2k) Version: 4.0(1c) Version: 4.0(4f) Version: 4.0(4c) Version: 3.1(3d) Version: 3.1(2g) Version: 3.1(2c) Version: 4.0(1d) Version: 3.1(2e) Version: 4.0(1a) Version: 4.0(1b) Version: 3.1(3b) Version: 4.0(4b) Version: 3.1(2b) Version: 4.0(4e) Version: 3.1(3h) Version: 4.0(4l) Version: 4.1(1g) Version: 4.1(2a) Version: 4.0(2n) Version: 4.1(1h) Version: 3.1(3k) Version: 4.1(2b) Version: 4.0(2o) Version: 4.0(4m) Version: 4.1(2d) Version: 4.1(3b) Version: 4.0(2p) Version: 4.1(2e) Version: 4.1(2f) Version: 4.0(4n) Version: 4.0(2q) Version: 4.1(3c) Version: 4.0(2r) Version: 4.1(3d) Version: 4.1(2g) Version: 4.1(2h) Version: 4.1(3g) Version: 4.1(3f) Version: 4.1(2j) Version: 4.1(2k) Version: 4.1(3h) Version: 4.2(2a) Version: 4.1(3i) Version: 4.2(2f) Version: 4.2(2g) Version: 4.2(3b) Version: 4.1(3l) Version: 4.2(3d) Version: 4.3(1.230097) Version: 4.2(1e) Version: 4.2(1b) Version: 4.2(1j) Version: 4.2(1i) Version: 4.2(1f) Version: 4.2(1a) Version: 4.2(1c) Version: 4.2(1g) Version: 4.3(1.230124) Version: 4.1(2l) Version: 4.2(3e) Version: 4.3(1.230138) Version: 4.2(3g) Version: 4.3(2.230207) Version: 4.2(3h) Version: 4.2(3i) Version: 4.3(2.230270) Version: 4.1(3m) Version: 4.1(2m) Version: 4.3(2.240002) Version: 4.3(3.240022) Version: 4.2(3j) Version: 4.1(3n) Version: 4.3(2.240009) Version: 4.3(3.240041) Version: 4.2(3k) Version: 4.3(3.240043) Version: 4.3(4.240142) Version: 4.3(2.240037) Version: 4.3(2.240053) Version: 4.3(4.240152) Version: 4.2(3l) Version: 4.3(2.240077) Version: 4.3(4.242028) Version: 4.3(4.241063) Version: 4.3(4.242038) Version: 4.2(3m) Version: 4.3(2.240090) Version: 4.3(5.240021) Version: 4.3(2.240107) Version: 4.3(4.242066) Version: 4.2(3n) Version: 4.3(5.250001) Version: 4.2(3o) Version: 4.3(2.250016) Version: 4.3(2.250021) Version: 4.3(5.250030) Version: 4.3(2.250022) Version: 4.3(6.250039) Version: 4.3(6.250040) Version: 4.3(5.250033) Version: 4.3(6.250044) Version: 4.3(6.250053) Version: 4.3(2.250037) Version: 4.3(2.250045) Version: 4.3(4.252001) Version: 4.3(4.252002) Version: 6.0(1.250127) Version: 4.2(3p) Version: 6.0(1.250131) Version: 4.3(6.250101) Version: 6.0(1.250174) Version: 4.3(6.250117) Version: 4.3(5.250043) Version: 4.3(5.250045) Version: 4.3(6.250060) Version: 6.0(1.250130) Version: 4.3(4.241014) Version: 4.3(2.250063) Version: 6.0(1.250192) Version: 4.3(6.260003) Version: 6.0(1.250194) Version: 4.3(6.260017) Version: 4.3(2.260007) Version: 6.0(2.260044) Version: 6.0(2.260069) Version: 4.3(6.260033) Version: 4.2(3q) |
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"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with\u0026nbsp;Admin privileges to execute arbitrary commands on the underlying operating system of an affected system and elevate privileges to root.\u0026nbsp;\r\n\r\nThis vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by entering crafted inputs to the web-based management interface of the affected software. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system as the root user.\u0026nbsp;\r\nCisco has assigned this vulnerability a SIR of High rather than Medium as the score indicates because additional security implications could occur when the attacker becomes\u0026nbsp;root."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is aware that proof-of-concept exploit code is available for CVE-2026-20200.\r\n\r\nThe Cisco PSIRT is not aware of any malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-cimc-arg-inject-upSHdMfU",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cimc-arg-inject-upSHdMfU"
}
],
"source": {
"advisory": "cisco-sa-cimc-arg-inject-upSHdMfU",
"defects": [
"CSCwt45063"
],
"discovery": "EXTERNAL"
},
"title": "Cisco IMC Remote Code Execution Vulnerability Remote Code Execution Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20288",
"datePublished": "2026-08-05T16:27:53.491Z",
"dateReserved": "2025-10-08T11:59:15.405Z",
"dateUpdated": "2026-08-06T03:55:30.370Z",
"state": "PUBLISHED"
},
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"vulnerability-lookup:meta": {
"vulnrichment": {
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{\"status\": \"affected\", \"version\": \"3.1.5\"}, {\"status\": \"affected\", \"version\": \"3.1.0\"}, {\"status\": \"affected\", \"version\": \"3.2.11.3\"}, {\"status\": \"affected\", \"version\": \"3.2.11.5\"}, {\"status\": \"affected\", \"version\": \"3.2.12.2\"}, {\"status\": \"affected\", \"version\": \"3.2.13.6\"}, {\"status\": \"affected\", \"version\": \"3.2.14\"}, {\"status\": \"affected\", \"version\": \"4.11.1\"}, {\"status\": \"affected\", \"version\": \"3.2.15\"}, {\"status\": \"affected\", \"version\": \"4.12.1\"}, {\"status\": \"affected\", \"version\": \"3.2.15.3\"}, {\"status\": \"affected\", \"version\": \"4.12.2\"}, {\"status\": \"affected\", \"version\": \"3.2.16.1\"}, {\"status\": \"affected\", \"version\": \"4.15.2\"}, {\"status\": \"affected\", \"version\": \"3.2.17.1\"}, {\"status\": \"affected\", \"version\": \"4.15.3\"}], \"defaultStatus\": \"unknown\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"The Cisco PSIRT is aware that proof-of-concept exploit code is available for CVE-2026-20200.\\r\\n\\r\\nThe Cisco PSIRT is not aware of any malicious use of the vulnerabilities that are described in this advisory.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cimc-arg-inject-upSHdMfU\", \"name\": \"cisco-sa-cimc-arg-inject-upSHdMfU\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with\u0026nbsp;Admin privileges to execute arbitrary commands on the underlying operating system of an affected system and elevate privileges to root.\u0026nbsp;\\r\\n\\r\\nThis vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by entering crafted inputs to the web-based management interface of the affected software. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system as the root user.\u0026nbsp;\\r\\nCisco has assigned this vulnerability a SIR of High rather than Medium as the score indicates because additional security implications could occur when the attacker becomes\u0026nbsp;root.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-146\", \"description\": \"Improper Neutralization of Expression/Command Delimiters\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2026-08-05T16:27:53.491Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-20288\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-06T03:55:30.370Z\", \"dateReserved\": \"2025-10-08T11:59:15.405Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2026-08-05T16:27:53.491Z\", \"assignerShortName\": \"cisco\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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