CVE-2026-20121
Last modified
CVE-2026-20121 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A vulnerability in the access control list (ACL) Object Group Search (OGS) implementation of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured access controls. This vulnerability is due to a logic error in populating group access control policies (ACPs) with OGS configured. An attacker could exploit this vulnerability by sending traffic that should be blocked through the device.
Description
A vulnerability in the access control list (ACL) Object Group Search (OGS) implementation of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured access controls. This vulnerability is due to a logic error in populating group access control policies (ACPs) with OGS configured. An attacker could exploit this vulnerability by sending traffic that should be blocked through the device. A successful exploit could allow the attacker to bypass access controls and reach devices in protected networks.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.23.1; 9.22.1.1; 9.22.1.3; 9.22.1.2; 9.22.1.6; 9.22.2; 9.23.1.3; 9.22.2.4; 9.23.1.7; 9.22.2.9; 9.23.1.13; 9.22.2.13; 9.23.1.19; 9.22.2.14; 9.23.1.22; 9.22.2.20 |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.6.0; 7.7.0; 7.6.1; 7.6.2; 7.7.10; 7.7.11; 7.6.2.1; 7.7.10.1 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-20121?
How severe is CVE-2026-20121?
How do I fix CVE-2026-20121?
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-20116A vulnerability in the web-based management interface of&nbs…6.1
- CVE-2026-20117A vulnerability in the web-based management interface of Cis…6.1
- CVE-2026-20118A vulnerability in the handling of an Egress Packet Network …6.8
- CVE-2026-20119A vulnerability in the text rendering subsystem of Cisco Tel…7.5
- CVE-2026-2012A vulnerability was determined in itsourcecode Student Manag…9.8
- CVE-2026-20120A vulnerability in the access control list (ACL) Object Grou…5.8
- CVE-2026-20122A vulnerability in the API of Cisco Catalyst SD-WAN Manager …5.4
- CVE-2026-20123A vulnerability in the web-based management interface of Cis…6.1
- CVE-2026-20124A vulnerability in the Simple Network Management Protocol (S…7.7
- CVE-2026-20125A vulnerability in the HTTP Server feature of Cisco IOS Soft…7.7
- CVE-2026-20126A vulnerability in Cisco Catalyst SD-WAN Manager could allow…7.8
- CVE-2026-20127A vulnerability in the peering authentication in Cisco Catal…10
Are you affected by CVE-2026-20121?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST