FKIE_CVE-2026-76499
Vulnerability from fkie_nvd - Published: 2026-10-07 17:17 - Updated: 2026-10-07 18:17
Severity
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Application Policy Infrastructure Controller (APIC) engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-76499 are related to improper neutralization issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-707.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unknown",
"product": "Cisco Application Policy Infrastructure Controller (APIC)",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "5.2(1g)"
},
{
"status": "affected",
"version": "5.2(2e)"
},
{
"status": "affected",
"version": "5.2(2f)"
},
{
"status": "affected",
"version": "5.2(2g)"
},
{
"status": "affected",
"version": "5.2(2h)"
},
{
"status": "affected",
"version": "5.2(3f)"
},
{
"status": "affected",
"version": "5.2(3e)"
},
{
"status": "affected",
"version": "5.2(3g)"
},
{
"status": "affected",
"version": "5.2(4d)"
},
{
"status": "affected",
"version": "5.2(4e)"
},
{
"status": "affected",
"version": "5.2(5d)"
},
{
"status": "affected",
"version": "5.2(5c)"
},
{
"status": "affected",
"version": "6.0(1g)"
},
{
"status": "affected",
"version": "5.2(5e)"
},
{
"status": "affected",
"version": "5.2(4f)"
},
{
"status": "affected",
"version": "5.2(6e)"
},
{
"status": "affected",
"version": "6.0(1j)"
},
{
"status": "affected",
"version": "5.2(6g)"
},
{
"status": "affected",
"version": "5.2(7f)"
},
{
"status": "affected",
"version": "5.2(7g)"
},
{
"status": "affected",
"version": "6.0(2h)"
},
{
"status": "affected",
"version": "5.2(6h)"
},
{
"status": "affected",
"version": "5.2(4h)"
},
{
"status": "affected",
"version": "5.2(8d)"
},
{
"status": "affected",
"version": "6.0(2j)"
},
{
"status": "affected",
"version": "5.2(8e)"
},
{
"status": "affected",
"version": "6.0(3d)"
},
{
"status": "affected",
"version": "6.0(3e)"
},
{
"status": "affected",
"version": "5.2(8f)"
},
{
"status": "affected",
"version": "5.2(8g)"
},
{
"status": "affected",
"version": "5.3(1d)"
},
{
"status": "affected",
"version": "5.2(8h)"
},
{
"status": "affected",
"version": "6.0(4c)"
},
{
"status": "affected",
"version": "5.3(2a)"
},
{
"status": "affected",
"version": "5.2(8i)"
},
{
"status": "affected",
"version": "6.0(5h)"
},
{
"status": "affected",
"version": "5.3(2b)"
},
{
"status": "affected",
"version": "6.0(3g)"
},
{
"status": "affected",
"version": "6.0(5j)"
},
{
"status": "affected",
"version": "5.3(2c)"
},
{
"status": "affected",
"version": "6.0(6c)"
},
{
"status": "affected",
"version": "6.1(1f)"
},
{
"status": "affected",
"version": "6.0(7e)"
},
{
"status": "affected",
"version": "5.3(2d)"
},
{
"status": "affected",
"version": "6.0(8d)"
},
{
"status": "affected",
"version": "6.0(8e)"
},
{
"status": "affected",
"version": "6.1(2f)"
},
{
"status": "affected",
"version": "6.0(8f)"
},
{
"status": "affected",
"version": "5.3(2e)"
},
{
"status": "affected",
"version": "6.1(2g)"
},
{
"status": "affected",
"version": "5.3(2f)"
},
{
"status": "affected",
"version": "6.0(9c)"
},
{
"status": "affected",
"version": "6.1(3f)"
},
{
"status": "affected",
"version": "6.0(9d)"
},
{
"status": "affected",
"version": "6.0(6g)"
},
{
"status": "affected",
"version": "6.0(6h)"
},
{
"status": "affected",
"version": "6.0(8h)"
},
{
"status": "affected",
"version": "6.1(3g)"
},
{
"status": "affected",
"version": "6.1(4h)"
},
{
"status": "affected",
"version": "6.0(9e)"
},
{
"status": "affected",
"version": "6.1(5e)"
},
{
"status": "affected",
"version": "6.2(1f)"
},
{
"status": "affected",
"version": "6.2(1g)"
},
{
"status": "affected",
"version": "6.0(9f)"
},
{
"status": "affected",
"version": "6.2(2e)"
}
]
}
],
"source": "psirt@cisco.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco Application Policy Infrastructure Controller (APIC) engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-76499 are related to improper neutralization issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-707.\r\n\u0026nbsp;"
}
],
"id": "CVE-2026-76499",
"lastModified": "2026-10-07T18:17:30.330",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "psirt@cisco.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-76499",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-07T17:47:36.467311Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-10-07T17:17:01.820",
"references": [
{
"source": "psirt@cisco.com",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-apic-UOXWtfh"
}
],
"sourceIdentifier": "psirt@cisco.com",
"vulnStatus": "Received",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-707"
}
],
"source": "psirt@cisco.com",
"type": "Secondary"
}
]
}
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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.
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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.
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