High7.5Cisco PoC reported

High [CVE-2026-20337 +6] ClamAV Vulnerabilities Affecting Cisco Products: August 2026

This high-severity Cisco advisory covers CVE-2026-20337 and CVE-2026-20338 and 5 more CVEs affecting Secure Endpoint.

cisco-sa-clamav-WuuvVd26 Published Aug 7, 2026Updated by vendor Aug 7, 2026

CVE-2026-20337 CVE-2026-20338 CVE-2026-20339 CVE-2026-20345 CVE-2026-20346 CVE-2026-20347 CVE-2026-20348

Affected products & platforms

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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.

Affected product named by the advisory: Secure Endpoint.

Affected versions

Release Secure Endpoint Connector for Linux (first fixed: CSCwv87285)
Release Release no. TBD (Aug 2026)1 (first fixed: Secure Endpoint Connector for Mac)
Release CSCwv87286 (first fixed: Release no. TBD (Aug 2026)1)
Release Secure Endpoint Connector for Windows (first fixed: CSCwv87283)
Release Release no. TBD (Aug 2026)1 (first fixed: Secure Endpoint Private Cloud)
Release CSCwv91588 (first fixed: 4.2.8 and later2)

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Fixed versions

CSCwv87285
Secure Endpoint Connector for Mac
Release no. TBD (Aug 2026)1
CSCwv87283
Secure Endpoint Private Cloud
4.2.8 and later2

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
Release Secure Endpoint Connector for Linux: upgrade to CSCwv87285.
Release Release no. TBD (Aug 2026)1: upgrade to Secure Endpoint Connector for Mac.
Release CSCwv87286: upgrade to Release no. TBD (Aug 2026)1.
Release Secure Endpoint Connector for Windows: upgrade to CSCwv87283.
Release Release no. TBD (Aug 2026)1: upgrade to Secure Endpoint Private Cloud.
Release CSCwv91588: upgrade to 4.2.8 and later2.

Workaround status

There are no workarounds that address these vulnerabilities.

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Cisco Security Advisoriesofficial
Official vendor source used to discover this advisory; it remains the authority for affected products and remediation. 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
Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Cisco
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program

Cross-references

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