CVE-2026-76500 (GCVE-0-2026-76500)
Vulnerability from cvelistv5 – Published: 2026-10-07 16:17 – Updated: 2026-10-07 16:17
VLAI
EPSS
VEX
Title
Cisco Application Policy Infrastructure Controller Hardening Release: October 2026 - Improper Control of a Resource Through its Lifetime Vulnerabilities
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-2026-76500 are related to issues with improper control of a resource through its lifetime that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-664.
Severity
9.8 (Critical)
CWE
- CWE-664 - Improper Control of a Resource Through its Lifetime
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Cisco | Cisco Application Policy Infrastructure Controller (APIC) |
Affected:
5.2(1g)
Affected: 5.2(2e) Affected: 5.2(2f) Affected: 5.2(2g) Affected: 5.2(2h) Affected: 5.2(3f) Affected: 5.2(3e) Affected: 5.2(3g) Affected: 5.2(4d) Affected: 5.2(4e) Affected: 5.2(5d) Affected: 5.2(5c) Affected: 6.0(1g) Affected: 5.2(5e) Affected: 5.2(4f) Affected: 5.2(6e) Affected: 6.0(1j) Affected: 5.2(6g) Affected: 5.2(7f) Affected: 5.2(7g) Affected: 6.0(2h) Affected: 5.2(6h) Affected: 5.2(4h) Affected: 5.2(8d) Affected: 6.0(2j) Affected: 5.2(8e) Affected: 6.0(3d) Affected: 6.0(3e) Affected: 5.2(8f) Affected: 5.2(8g) Affected: 5.3(1d) Affected: 5.2(8h) Affected: 6.0(4c) Affected: 5.3(2a) Affected: 5.2(8i) Affected: 6.0(5h) Affected: 5.3(2b) Affected: 6.0(3g) Affected: 6.0(5j) Affected: 5.3(2c) Affected: 6.0(6c) Affected: 6.1(1f) Affected: 6.0(7e) Affected: 5.3(2d) Affected: 6.0(8d) Affected: 6.0(8e) Affected: 6.1(2f) Affected: 6.0(8f) Affected: 5.3(2e) Affected: 6.1(2g) Affected: 5.3(2f) Affected: 6.0(9c) Affected: 6.1(3f) Affected: 6.0(9d) Affected: 6.0(6g) Affected: 6.0(6h) Affected: 6.0(8h) Affected: 6.1(3g) Affected: 6.1(4h) Affected: 6.0(9e) Affected: 6.1(5e) Affected: 6.2(1f) Affected: 6.2(1g) Affected: 6.0(9f) Affected: 6.2(2e) |
guessed |
{
"containers": {
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{
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"vendor": "Cisco",
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"version": "5.2(4e)"
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{
"status": "affected",
"version": "5.2(5d)"
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"version": "5.2(5c)"
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{
"status": "affected",
"version": "6.0(1g)"
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{
"status": "affected",
"version": "5.2(5e)"
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"version": "5.2(4f)"
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{
"status": "affected",
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{
"status": "affected",
"version": "6.0(1j)"
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{
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{
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{
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"version": "5.2(7g)"
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{
"status": "affected",
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},
{
"status": "affected",
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{
"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)"
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{
"status": "affected",
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},
{
"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",
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},
{
"status": "affected",
"version": "6.0(9f)"
},
{
"status": "affected",
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}
]
}
],
"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. \u0026nbsp;\r\n\r\nThe vulnerabilities tracked by CVE-2026-76500 are related to issues with improper control of a resource through its lifetime that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-664."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"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"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
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"description": "Improper Control of a Resource Through its Lifetime",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-07T16:17:34.991Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-hardening-apic-UOXWtfh",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-apic-UOXWtfh"
}
],
"source": {
"advisory": "cisco-sa-hardening-apic-UOXWtfh",
"defects": [
"CSCwu76893"
],
"discovery": "INTERNAL"
},
"title": "Cisco Application Policy Infrastructure Controller Hardening Release: October 2026 - Improper Control of a Resource Through its Lifetime Vulnerabilities"
}
},
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"assignerShortName": "cisco",
"cveId": "CVE-2026-76500",
"datePublished": "2026-10-07T16:17:34.991Z",
"dateReserved": "2026-08-19T12:02:03.641Z",
"dateUpdated": "2026-10-07T16:17:34.991Z",
"state": "PUBLISHED"
},
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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],
"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. \u0026nbsp;\r\n\r\nThe vulnerabilities tracked by CVE-2026-76500 are related to issues with improper control of a resource through its lifetime that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-664."
}
],
"id": "CVE-2026-76500",
"lastModified": "2026-10-07T17:17:01.963",
"metrics": {
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{
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"scope": "UNCHANGED",
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"type": "Primary"
}
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},
"published": "2026-10-07T17:17:01.963",
"references": [
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"source": "psirt@cisco.com",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-apic-UOXWtfh"
}
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]
}
}
}
}
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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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