CVE-2026-20105 is a denial-of-service vulnerability affecting Cisco Secure Firewall ASA and FTD Software's Remote Access SSL VPN functionality. An authenticated, remote attacker can exploit this by sending crafted packets to exhaust device memory, causing a reload and DoS. This vulnerability has a CVSS score of 7.7 (High), indicating a network-based attack with low complexity and requiring low privileges, leading to high availability impact. There is no evidence of active exploitation, public exploit code, or inclusion in CISA's KEV catalog, though it has received some community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 9.12.1, < 9.16.4.85CPE matchmatch criteria | cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* | ||
>= 9.17.1, < 9.18.4.66CPE matchmatch criteria | cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* | ||
>= 9.19.1, < 9.20.4CPE matchmatch criteria | cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* | ||
>= 9.22.1.1, < 9.22.2.4CPE matchmatch criteria | cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* | ||
>= 9.23.1, < 9.23.1.7CPE matchmatch criteria | cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.