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CVE-2026-20334

Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Coding Standards Vulnerabilities

High8.4EPSS 0.39%
Published
Updated
Reserved
Assigned by
cisco

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-2026-20334 are related to issues concerning improper adherence to coding standards that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-710.

Scores

CVSS scores of CVE-2026-20334, by who scored it
Scored byCVSSScoreVector
ciscoCNA (assigner)3.1High8.4CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
NVDNVD · Awaiting Analysis3.1High8.4CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.39% · top 67% of all CVEs (6 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 8.4.

Weakness

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 (1)

Sources

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

Badge for a README or a ticket

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Record last updated .