01 Record
CVE-2026-20009
Cisco Secure Firewall Adaptive Security Appliance SSH Partial Private Key Authentication Bypass Vulnerability
MediumPUBLISHEDCNA: cisco
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
02 Description
Cisco Secure Firewall Adaptive Security Appliance SSH Partial Private Key Authentication Bypass Vulnerability
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.40% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 34.4% of scored records. A rank, not a probability.
- NVD base score
- 5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-03-04 17:06Z7 MO AGO
- Last updated
- 2026-03-05 15:49Z7 MO AGO
- Reserved
- 2025-10-08
- Assigning CNA
- cisco
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.3)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-138Improper Neutralization of Special ElementsClass
- Data version
- 5.2
- Document digest
- 489d36ee85e1027d757c25c6829f3d291939713f1fe69fd56eb1899978413d72
05 Affected products
VendorProductVersionsPlatforms
CiscoCisco Secure Firewall Adaptive Security Appliance (ASA) Software9.17.1, 9.17.1.7, 9.17.1.9, 9.17.1.10, 9.18.1, 9.18.1.3, 9.17.1.11, 9.18.2, 9.17.1.13, 9.17.1.15, 9.18.2.5, 9.17.1.20, 9.18.2.7, 9.19.1, 9.18.2.8, 9.18.3, 9.19.1.5, 9.17.1.30, 9.19.1.9, 9.18.3.39, 9.19.1.12, 9.18.3.46, 9.19.1.18, 9.18.3.53, 9.18.3.55, 9.17.1.33, 9.18.3.56, 9.20.1, 9.19.1.22, 9.18.4, 9.20.1.5, 9.18.4.5, 9.19.1.24, 9.18.4.8, 9.20.2, 9.19.1.27, 9.18.4.22, 9.20.2.10, 9.19.1.28, 9.17.1.39, 9.18.4.24, 9.20.2.21, 9.19.1.31, 9.18.4.29, 9.20.2.22, 9.18.4.34, 9.20.3, 9.18.4.40, 9.23.1, 9.22.1.1, 9.20.3.4, 9.18.4.47, 9.20.3.7, 9.17.1.45, 9.19.1.37, 9.17.1.46, 9.20.3.9, 9.19.1.38, 9.18.4.50, 9.22.1.3, 9.20.3.10, 9.22.1.2, 9.18.4.52, 9.20.3.13, 9.22.1.6, 9.18.4.53, 9.22.2, 9.20.3.16, 9.19.1.42, 9.18.4.57, 9.23.1.3, 9.20.3.20, 9.22.2.4, 9.23.1.7, 9.20.4, 9.22.2.9, 9.23.1.13, 9.20.4.7, 9.22.2.13, 9.18.4.66, 9.18.4.67, 9.18.4.68—
06 References
- sec.cloudapps.cisco.comcisco-sa-asa-ssh-keybypass-cr5xPUSfhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ssh-keybypass-cr5xPUSf