CVE-2024-20299

Cisco Adaptive Security Appliance and Firepower Threat Defense AnyConnect Access Control List Bypass Vulnerability

MEDIUM
5.8
CVSS Score
Published: October 23, 2024 at 05:08 PM UTC
Updated: August 11, 2026 at 07:33 PM UTC
3 products affected across 1 vendorAdaptive Security ApplianceSecure Firewall Threat DefenseFirepower Threat Defense

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Severity
MEDIUM5.8
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

A vulnerability in the AnyConnect firewall for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass a configured access control list (ACL) and allow traffic that should have been denied to flow through an affected device. This vulnerability is due to a logic error in populating group ACLs when an AnyConnect client establishes a new session toward an affected device. An attacker could exploit this vulnerability by establishing an AnyConnect connection to the affected device. A successful exploit could allow the attacker to bypass configured ACL rules.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.2.3 ≤ v ≤ 6.7.0.37.0.0 ≤ v ≤ 7.3.1.26.2.37.0.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.8MEDIUMcisco
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-290

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