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Highest advisory severityMedium 1 vendor · 1 advisory

CVE-2026-20031

CVE-2026-20031: 1 tracked advisory record across Cisco. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

NVD detail CVE.org

Vendor advisory comparison

Cisco

1 advisory
  • Advisory severityMedium5.3

    Medium [CVE-2026-20031] ClamAV Cascading Style Sheets Image Parsing Error Handling Denial of Service Vulnerability

    cisco-sa-clamav-css-Fn4QSZSource published Source updated

    A vulnerability in the HTML Cascading Style Sheets (CSS) module of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error handling when splitting UTF-8 strings. An attacker could exploit this vulnerability by submitting a crafted HTML file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the scanning process. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulne…

    Related products — impact not confirmed
    • Cisco Secure Endpoint Private Cloud Console
    Source-reported affected versions
    • Release Secure Endpoint Connector for Linux (first fixed: 1.28.11)
    • Release Secure Endpoint Connector for Mac (first fixed: 1.27.21)
    • Release Secure Endpoint Connector for Windows (first fixed: 8.6.01)
    • Release Secure Endpoint Private Cloud (first fixed: 4.2.7 or earlier with updated connectors2)
    Source-reported fixed versions
    • 1.28.11
    • 1.27.21
    • 8.6.01
    • 4.2.7 or earlier with updated connectors2
    Mitigation guidance
    • 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 1.28.11.
    • Release Secure Endpoint Connector for Mac: upgrade to 1.27.21.
    • Release Secure Endpoint Connector for Windows: upgrade to 8.6.01.

    1 more entries in the full advisory.

    Workarounds
    • There are no workarounds that address this vulnerability.
    Full advisory and evidenceOpen source bulletin

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