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Highest advisory severityMedium 1 vendor · 1 advisory

CVE-2026-20005

CVE-2026-20005: 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.

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Vendor advisory comparison

Cisco

1 advisory
  • Advisory severityMedium5.8

    Medium [CVE-2026-20005 +4] Multiple Cisco Products Snort 3 Denial of Service Vulnerabilities

    cisco-sa-snort3-multi-dos-XFWkWSwzSource published Source updated

    This bulletin covers 5 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.

    Multiple Cisco products are affected by vulnerabilities in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection. For more information about these vulnerabilities, see the Details section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is part of the March 2026 release of the Cisco Secure Firewall ASA, Secure FMC, and Secure FTD Software Security Adv…

    Related products — impact not confirmed
    • Cisco Cyber Vision
    • Cisco UTD SNORT IPS Engine Software
    • Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1
    • Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1.1

    3 more entries in the full advisory.

    Source-reported affected versions
    • Scope: For information about which products were affected by these vulnerabilities at the time of publication, see the following sections. Open Source Snort 3
    • Release 3.x (first fixed: 3.9.2.0 and later / 3.6.3.0 and later / 3.9.7.0 and later / 3.9.5.0 and later)
    • Release 17.12 (first fixed: 17.12.7 (Mar 2026))
    • Release 17.15 (first fixed: 17.15.5)

    4 more entries in the full advisory.

    Source-reported fixed versions
    • 3.9.2.0 and later / 3.6.3.0 and later / 3.9.7.0 and later / 3.9.5.0 and later
    • 17.12.7 (Mar 2026)
    • 17.15.5
    • 17.18.3 (Apr 2026)

    2 more entries in the full advisory.

    Mitigation guidance
    • Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
    • Release 3.x: upgrade to 3.9.2.0 and later / 3.6.3.0 and later / 3.9.7.0 and later / 3.9.5.0 and later.
    • Release 17.12: upgrade to 17.12.7 (Mar 2026).
    • Release 17.15: upgrade to 17.15.5.

    4 more entries in the full advisory.

    Workarounds
    • There are no workarounds that address these vulnerabilities.
    Full advisory and evidenceOpen source bulletin

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