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CVE-2026-20333Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Incorrect Comparison Vulnerabilities

Description

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secure Firewall Management Center Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20333 are related to incorrect comparison conditions that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-697.

Timeline

  1. ID reserved

    By cisco

  2. · 11 months later

    Published

  3. · 2 days later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-20333, by who scored it
Scored byCVSSScoreVector
ciscoCNA (assigner)3.1High8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Awaiting Analysis3.1High8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.46% · top 60% of all CVEs (13 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.

Affected products

  • Cisco · Cisco Secure Firewall Adaptive Security Appliance (ASA) Software

    • affected 9.16.1
    • affected 9.16.1.28
    • affected 9.16.2
    • affected 9.16.2.3
    • affected 9.16.2.7
    • affected 9.16.2.11
    • affected 9.16.2.13
    • affected 9.16.2.14
    • affected 9.16.3.3
    • affected 9.16.3
    • affected 9.16.3.14
    • affected 9.16.3.15
    • affected 9.18.1.3
    • affected 9.18.2
    • affected 9.16.3.19
    • affected 9.16.3.23
    • affected 9.18.2.5
    • affected 9.16.4
    • affected 9.18.2.7
    • affected 9.16.4.9
    • affected 9.18.2.8
    • affected 9.16.4.14
    • affected 9.18.3
    • affected 9.16.4.18
    • affected 9.18.3.39
    • affected 9.16.4.19
    • affected 9.18.3.46
    • affected 9.16.4.27
    • affected 9.18.3.53
    • affected 9.18.3.55
    • affected 9.16.4.38
    • affected 9.16.4.39
    • affected 9.18.3.56
    • affected 9.20.1
    • affected 9.16.4.42
    • affected 9.18.4
    • affected 9.20.1.5
    • affected 9.18.4.5
    • affected 9.16.4.48
    • affected 9.18.4.8
    • and 81 more

  • Cisco · Cisco Secure Firewall Management Center (FMC)

    • affected 7.0.0
    • affected 7.0.0.1
    • affected 7.0.1
    • affected 7.0.1.1
    • affected 7.0.2
    • affected 7.2.0
    • affected 7.0.2.1
    • affected 7.0.3
    • affected 7.2.0.1
    • affected 7.0.4
    • affected 7.2.1
    • affected 7.0.5
    • affected 7.3.0
    • affected 7.2.2
    • affected 7.3.1
    • affected 7.2.3
    • affected 7.2.3.1
    • affected 7.2.4
    • affected 7.0.6
    • affected 7.2.4.1
    • affected 7.2.5
    • affected 7.3.1.1
    • affected 7.4.0
    • affected 7.0.6.1
    • affected 7.2.5.1
    • affected 7.4.1
    • affected 7.2.6
    • affected 7.4.1.1
    • affected 7.0.6.2
    • affected 7.2.7
    • affected 7.2.5.2
    • affected 7.3.1.2
    • affected 7.2.8
    • affected 7.6.0
    • affected 7.4.2
    • affected 7.2.8.1
    • affected 7.0.6.3
    • affected 7.4.2.1
    • affected 7.2.9
    • affected 7.0.7
    • and 28 more

  • Cisco · Cisco Secure Firewall Threat Defense (FTD) Software

    • affected 7.0.0.1
    • affected 7.0.1
    • affected 7.0.1.1
    • affected 7.0.2
    • affected 7.0.2.1
    • affected 7.0.3
    • affected 7.0.4
    • affected 7.0.5
    • affected 7.3.0
    • affected 7.3.1
    • affected 7.0.6
    • affected 7.3.1.1
    • affected 7.4.0
    • affected 7.0.6.1
    • affected 7.4.1
    • affected 7.0.6.2
    • affected 7.4.1.1
    • affected 7.3.1.2
    • affected 7.6.0
    • affected 7.4.2
    • affected 7.0.6.3
    • affected 7.4.2.1
    • affected 7.0.7
    • affected 7.7.0
    • affected 7.4.2.2
    • affected 7.6.1
    • affected 7.4.2.3
    • affected 7.0.8
    • affected 7.6.2
    • affected 7.7.10
    • affected 7.7.11
    • affected 7.0.8.1
    • affected 7.6.2.1
    • affected 7.7.10.1
    • affected 7.4.2.4
    • affected 7.4.3
    • affected 7.6.4
    • affected 10.0.0
    • affected 7.4.4
    • affected 7.0.9
    • and 1 more

What to do

Exploitation: Except as otherwise noted previously, the Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.

References

References1

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2026-20333 badge
[![CVE-2026-20333](https://cveledger.app/badge/CVE-2026-20333.svg)](https://cveledger.app/cve/CVE-2026-20333)

Record last updated .