Advisory severityHigh7.5Cisco

High [CVE-2026-20213 +6] ClamAV Vulnerabilities Affecting Cisco Products: July 2026

This high-severity Cisco advisory covers CVE-2026-20213 and CVE-2026-20214 and 5 more CVEs; related products: Secure Web Appliance, Secure Email, Secure Endpoint.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 7 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.

cisco-sa-clamav-88cFYyxR Source published Jul 2, 2026Source updated Jul 2, 2026

VulniPulse record published Jul 5, 2026Record updated Jul 31, 2026

CVE-2026-20213 CVE-2026-20214 CVE-2026-20215 CVE-2026-20216 CVE-2026-20217 CVE-2026-20243 CVE-2026-20244

Monitor future Cisco CVEs from your phone.

Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.

Matching phone alertsOptional email delivery

Get CVE alerts See app features

Summary

Multiple vulnerabilities in ClamAV could allow a remote attacker to cause a denial of service (DoS) condition, interrupting scanning operations.

For more information about these vulnerabilities, see the Details section of this advisory.

For additional information on these vulnerabilities in ClamAV, see the ClamAV blog.

Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

Notes:

The Security Impact Rating (SIR) for these vulnerabilities is High for Windows-based platforms only because those platforms run the ClamAV scanning process in a privileged security context. The platforms that are highly impacted include Cisco Secure Endpoint Connector for Windows.
The SIR for these vulnerabilities is Medium on other platforms, including Linux and Mac platforms, because those platforms run the ClamAV scanning process in a lower-privileged security context. The affected platforms include Secure Endpoint Connector for Linux and Mac.
Cisco Secure Endpoint Private Cloud itself is not impacted by these vulnerabilities. However, the Cisco Secure Endpoint Connector software that is distributed from the device is impacted.

Affected products named by the advisory: Secure Web Appliance; Secure Email.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Fixed versions

1.29.01
1.27.21
8.6.21
4.2.8 and later2

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Mitigation checklist

Workaround status

There are no workarounds that address these vulnerabilities.

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Cisco Security Advisories (PSIRT)official
Official vendor feed — the source of truth for this advisory. VulniPulse polled this feed and parsed this entry from it. Discovered from the machine-readable feed https://sec.cloudapps.cisco.com/security/center/psirtrss20/CiscoSecurityAdvisory.xml; this link opens the Cisco advisory index instead of the raw feed document.
Cisco
Vendor advisory pageofficial
Advisory page fetched and parsed to extract affected/fixed versions and mitigation guidance beyond what the feed carries.
Cisco

Cross-references

Validate CVE metadata against the authoritative registries.

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.