Unauthenticated access-control bypass
Published Oct 7, 2026 · Updated Oct 7, 2026
Improper access control in Cisco APIC 5.3 and earlier and affected 6.x releases allows remote attackers to bypass access restrictions. Cisco groups internally discovered authentication, authorization, privilege, and bypass issues under this CVE but does not identify the affected component or the operation that fails to enforce access control. Every device configuration is affected; the most severe grouped issue requires no credentials or user interaction, but Cisco does not specify the actions an attacker can take.
Summary
What happened
Improper access control in Cisco APIC 5.3 and earlier and affected 6.x releases allows remote attackers to bypass access restrictions. Cisco groups internally discovered authentication, authorization, privilege, and bypass issues under this CVE but does not identify the affected component or the operation that fails to enforce access control. Every device configuration is affected; the most severe grouped issue requires no credentials or user interaction, but Cisco does not specify the actions an attacker can take.
The record
- CVE
- CVE-2026-76498
- Published
- Oct 7, 2026
- Updated
- Oct 7, 2026
- Vendor
- Clam AntiVirus
- Product
- Cisco Application Policy Infrastructure Controller (APIC)
- Classifications
- CWE-284
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 7, 2026CVE publishedPublication date reported by the CVE source.
- Oct 7, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=5.2(1g)
- Affected versionversion=5.2(2e)
- Affected versionversion=5.2(2f)
- Affected versionversion=5.2(2g)
- Affected versionversion=5.2(2h)
- Affected versionversion=5.2(3e)
- Affected versionversion=5.2(3f)
- Affected versionversion=5.2(3g)
- Affected versionversion=5.2(4d)
- Affected versionversion=5.2(4e)
- Affected versionversion=5.2(4f)
- Affected versionversion=5.2(4h)
- Affected versionversion=5.2(5c)
- Affected versionversion=5.2(5d)
- Affected versionversion=5.2(5e)
- Affected versionversion=5.2(6e)
- Affected versionversion=5.2(6g)
- Affected versionversion=5.2(6h)
- Affected versionversion=5.2(7f)
- Affected versionversion=5.2(7g)
- Affected versionversion=5.2(8d)
- Affected versionversion=5.2(8e)
- Affected versionversion=5.2(8f)
- Affected versionversion=5.2(8g)
- Affected versionversion=5.2(8h)
- Affected versionversion=5.2(8i)
- Affected versionversion=5.3(1d)
- Affected versionversion=5.3(2a)
- Affected versionversion=5.3(2b)
- Affected versionversion=5.3(2c)
- Affected versionversion=5.3(2d)
- Affected versionversion=5.3(2e)
- Affected versionversion=5.3(2f)
- Affected versionversion=6.0(1g)
- Affected versionversion=6.0(1j)
- Affected versionversion=6.0(2h)
- Affected versionversion=6.0(2j)
- Affected versionversion=6.0(3d)
- Affected versionversion=6.0(3e)
- Affected versionversion=6.0(3g)
- Affected versionversion=6.0(4c)
- Affected versionversion=6.0(5h)
- Affected versionversion=6.0(5j)
- Affected versionversion=6.0(6c)
- Affected versionversion=6.0(6g)
- Affected versionversion=6.0(6h)
- Affected versionversion=6.0(7e)
- Affected versionversion=6.0(8d)
- Affected versionversion=6.0(8e)
- Affected versionversion=6.0(8f)
- Affected versionversion=6.0(8h)
- Affected versionversion=6.0(9c)
- Affected versionversion=6.0(9d)
- Affected versionversion=6.0(9e)
- Affected versionversion=6.0(9f)
- Affected versionversion=6.1(1f)
- Affected versionversion=6.1(2f)
- Affected versionversion=6.1(2g)
- Affected versionversion=6.1(3f)
- Affected versionversion=6.1(3g)
- Affected versionversion=6.1(4h)
- Affected versionversion=6.1(5e)
- Affected versionversion=6.2(1f)
- Affected versionversion=6.2(1g)
- Affected versionversion=6.2(2e)
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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