Cisco ASA and FTD Information Disclosure
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an information disclosure vulnerability. An attacker could retrieve memory contents on an affected device, which could lead to the disclosure of confidential information due to a buffer tracking issue when the software parses invalid URLs that are requested from the web services interface. This vulnerability affects only specific AnyConnect and WebVPN configurations. Added to the CISA KEV catalog on 2024-02-15. CISA lists known use in ransomware campaigns. CVE-2020-3259 was assigned before 2024; the KEV listing came in 2024.
Why this severity: CVSS 7.5 (v3.0, CNA), actively exploited (CISA KEV); known ransomware use
- Started
- Feb 15, 2024
- Closed
- Feb 15, 2024
Affected
- See vendor advisory (versions are not listed in the KEV record)
Fixed in
- See vendor advisory linked in sources
Timeline1
CISA added CVE-2020-3259 to the KEV catalog (federal deadline 2024-03-07)
Source
Advisories3
Notes & caveats
Derived from the CISA KEV JSON feed (catalogVersion 2026.10.21); CVSS from the CVE record (cveawg.mitre.org). startedAt is the CVE publication date when it fell in 2024 before the KEV listing, else the KEV dateAdded; exploitation may have begun earlier. closedAt is the KEV listing date (a fix or mitigation was available then unless noted).
Get an email when a new major security incident drops. No spam, unsubscribe any time.
