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PatchSiren cyber security CVE debrief

CVE-2026-76498 Cisco CVE debrief

Cisco Application Policy Infrastructure Controller (APIC) has multiple improper access control vulnerabilities addressed in a hardening release. Defenders should assess exposure, prioritize remediation, and verify affected versions. The vulnerabilities are related to improper access control issues grouped under CWE-284. Cisco's engineering team conducted an internal security review, leading to software hardening releases. Affected versions need to be verified, and compensating controls should be reviewed.

Vendor
Cisco
Product
Cisco Application Policy Infrastructure Controller (APIC)
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-07
Original CVE updated
2026-10-07
Advisory published
2026-10-07
Advisory updated
2026-10-07

Who should care

Defenders of Cisco Application Policy Infrastructure Controller (APIC) instances should assess exposure and prioritize remediation. Operators, administrators, and security teams managing APIC instances need to verify affected versions and take appropriate actions. Security teams should review the CVE record and Cisco security advisory for details on the vulnerabilities and affected versions. They should also assess the operational impact and prioritize rem

Why it matters

CVE-2026-76498 addresses multiple improper access control vulnerabilities in Cisco Application Policy Infrastructure Controller (APIC), requiring defenders to assess exposure and prioritize remediation.

  • Verify affected versions of Cisco Application Policy Infrastructure Controller (APIC)
  • Assess exposure of APIC instances to improper access control
  • Prioritize remediation of affected versions
  • Check for compensating controls

Technical summary

CVE-2026-76498 addresses multiple improper access control vulnerabilities in Cisco Application Policy Infrastructure Controller (APIC). The vulnerabilities are related to improper access control issues grouped under CWE-284. Cisco's engineering team conducted an internal security review, leading to software hardening releases. Defenders should assess exposure and prioritize remediation based on the affected versions and severity of the vulnerabilities. The internal security review revealed multiple improper access control issues.

Defensive priority

High

Recommended defensive actions

  • Assess exposure of Cisco Application Policy Infrastructure Controller (APIC) instances
  • Prioritize remediation of affected versions
  • Verify inventory of APIC instances
  • Check for compensating controls
  • Review relevant monitoring, detection, and logs for exposed assets
  • Track exceptions, retest remediated assets
  • Confirm whether affected product deployments exist in managed environments

Evidence notes

The CVE record and Cisco security advisory provide details on the vulnerabilities and affected versions. The internal security review by Cisco's engineering team revealed multiple improper access control issues. Defenders should verify affected versions and assess exposure. The CVE record was published on 2026-10-07T16:17:25.677Z and has not been modified since then.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-76498 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-76498

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-76498 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-76498

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.