CVE-2026-20200 (GCVE-0-2026-20200)
Vulnerability from cvelistv5 – Published: 2026-08-05 16:18 – Updated: 2026-09-16 03:55
VLAI
EPSS
VEX
Title
Cisco Integrated Management Controller Argument Injection and Remote Code Execution Vulnerability
Summary
A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with low 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.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 00:00 UTC
CWE
- CWE-141 - Improper Neutralization of Parameter/Argument Delimiters
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Cisco | Cisco Unified Computing System (Standalone) |
Affected:
4.3(1.230097)
Affected: 4.3(1.230124) Affected: 4.3(1.230138) Affected: 4.3(2.230207) Affected: 4.3(2.230270) Affected: 4.3(2.240002) Affected: 4.3(3.240022) Affected: 4.3(3.240043) Affected: 4.3(4.240142) Affected: 4.3(4.240152) Affected: 4.3(4.242028) Affected: 4.3(4.241063) Affected: 4.3(4.242038) Affected: 4.3(5.240021) Affected: 4.3(4.242066) Affected: 4.3(5.250001) Affected: 4.3(5.250030) Affected: 4.3(6.250040) Affected: 4.3(5.250033) Affected: 4.3(6.250044) Affected: 4.3(6.250053) Affected: 4.3(4.252001) Affected: 4.3(4.252002) Affected: 6.0(1.250127) Affected: 6.0(1.250131) Affected: 4.3(6.250101) Affected: 6.0(1.250174) Affected: 4.3(6.250117) Affected: 4.3(5.250043) Affected: 4.3(6.250039) Affected: 4.3(5.250045) Affected: 4.3(6.250060) Affected: 6.0(1.250130) Affected: 4.3(4.241014) Affected: 6.0(1.250192) Affected: 4.3(6.260003) Affected: 6.0(1.250194) Affected: 4.3(6.260017) |
guessed |
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"matchCriteriaId": "63A1580D-A644-4F4C-B41E-5D97273CB6A6",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
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{
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"value": "A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with low 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;"
},
{
"lang": "es",
"value": "Una vulnerabilidad en la interfaz de gesti\u00f3n basada en web de Cisco IMC podr\u00eda permitir a un atacante remoto autenticado con privilegios bajos ejecutar comandos arbitrarios en el sistema operativo subyacente de un sistema afectado y elevar privilegios a root.\n\nEsta vulnerabilidad se debe a una validaci\u00f3n incorrecta de la entrada proporcionada por el usuario. Un atacante podr\u00eda explotar esta vulnerabilidad introduciendo entradas manipuladas en la interfaz de gesti\u00f3n basada en web del software afectado. Un exploit exitoso podr\u00eda permitir al atacante ejecutar comandos arbitrarios en el sistema operativo subyacente como el usuario root."
}
],
"id": "CVE-2026-20200",
"lastModified": "2026-10-23T21:10:00.157",
"metrics": {
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{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
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"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9,
"source": "psirt@cisco.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
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"exploitation": "none"
},
{
"automatable": "no"
},
{
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}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-05T00:00:00+00:00",
"version": "2.0.3"
}
}
]
},
"published": "2026-08-05T17:16:47.180",
"references": [
{
"source": "psirt@cisco.com",
"tags": [
"Vendor Advisory"
],
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cimc-arg-inject-upSHdMfU"
}
],
"sourceIdentifier": "psirt@cisco.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-141"
}
],
"source": "psirt@cisco.com",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-20200",
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},
{
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},
{
"Technical Impact": "total"
}
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"timestamp": "2026-08-05T17:30:46.495439Z",
"version": "2.0.3"
},
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],
"providerMetadata": {
"dateUpdated": "2026-08-05T17:30:49.309Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Unified Computing System (Standalone)",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "4.3(1.230097)"
},
{
"status": "affected",
"version": "4.3(1.230124)"
},
{
"status": "affected",
"version": "4.3(1.230138)"
},
{
"status": "affected",
"version": "4.3(2.230207)"
},
{
"status": "affected",
"version": "4.3(2.230270)"
},
{
"status": "affected",
"version": "4.3(2.240002)"
},
{
"status": "affected",
"version": "4.3(3.240022)"
},
{
"status": "affected",
"version": "4.3(3.240043)"
},
{
"status": "affected",
"version": "4.3(4.240142)"
},
{
"status": "affected",
"version": "4.3(4.240152)"
},
{
"status": "affected",
"version": "4.3(4.242028)"
},
{
"status": "affected",
"version": "4.3(4.241063)"
},
{
"status": "affected",
"version": "4.3(4.242038)"
},
{
"status": "affected",
"version": "4.3(5.240021)"
},
{
"status": "affected",
"version": "4.3(4.242066)"
},
{
"status": "affected",
"version": "4.3(5.250001)"
},
{
"status": "affected",
"version": "4.3(5.250030)"
},
{
"status": "affected",
"version": "4.3(6.250040)"
},
{
"status": "affected",
"version": "4.3(5.250033)"
},
{
"status": "affected",
"version": "4.3(6.250044)"
},
{
"status": "affected",
"version": "4.3(6.250053)"
},
{
"status": "affected",
"version": "4.3(4.252001)"
},
{
"status": "affected",
"version": "4.3(4.252002)"
},
{
"status": "affected",
"version": "6.0(1.250127)"
},
{
"status": "affected",
"version": "6.0(1.250131)"
},
{
"status": "affected",
"version": "4.3(6.250101)"
},
{
"status": "affected",
"version": "6.0(1.250174)"
},
{
"status": "affected",
"version": "4.3(6.250117)"
},
{
"status": "affected",
"version": "4.3(5.250043)"
},
{
"status": "affected",
"version": "4.3(6.250039)"
},
{
"status": "affected",
"version": "4.3(5.250045)"
},
{
"status": "affected",
"version": "4.3(6.250060)"
},
{
"status": "affected",
"version": "6.0(1.250130)"
},
{
"status": "affected",
"version": "4.3(4.241014)"
},
{
"status": "affected",
"version": "6.0(1.250192)"
},
{
"status": "affected",
"version": "4.3(6.260003)"
},
{
"status": "affected",
"version": "6.0(1.250194)"
},
{
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"version": "4.3(6.260017)"
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"descriptions": [
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"lang": "en",
"value": "A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with low 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;"
}
],
"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": [
{
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
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"confidentialityImpact": "HIGH",
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"privilegesRequired": "LOW",
"scope": "UNCHANGED",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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},
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}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-141",
"description": "Improper Neutralization of Parameter/Argument Delimiters",
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"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-16T03:55:58.219Z",
"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": [
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],
"discovery": "EXTERNAL"
},
"title": "Cisco Integrated Management Controller Argument Injection and Remote Code Execution Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20200",
"datePublished": "2026-08-05T16:18:32.963Z",
"dateReserved": "2025-10-08T11:59:15.397Z",
"dateUpdated": "2026-09-16T03:55:58.219Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.