Advisory [CVE-2026-20011 +12] Cisco Advance Notification for Publication of October 21, 2026, Security Advisories
This security Cisco advisory covers CVE-2026-20011 and CVE-2026-20019 and 11 more CVEs.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 13 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.
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Summary
On October 21, 2026, the Cisco Product Security Incident Response Team (PSIRT) published the following advisories.
To remediate the vulnerabilities that were disclosed on October 21, 2026, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories.
For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the Foundation: A Predictable, Customer-Focused Response to AI-Accelerated Vulnerability Discovery.
Snort 3
Cisco Security Advisory CVE ID
Security Impact Rating CVSS Base Score
Critical 9.0
High 7.8
Medium 5.8
5.3
Cisco Expressway and Unified Communications Products
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 20 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 20 hours ago·verify at source
Mitigation checklist
- To remediate the vulnerabilities that were disclosed on October 21, 2026, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories.
Official advisory · medium-confidence parse· fetched 20 hours ago·verify at source
Discussion(0)
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