Integer overflow in Cisco Anyconnect Secure Mobility Client
CVE-2024-20474
A vulnerability in Internet Key Exchange version 2 (IKEv2) processing of Cisco Secure Client Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) of Cisco Secure Client. This vulnerability is due to an integer underflow condition. An attacker could exploit this vulnerability by sending a crafted IKEv2 packet to an affected system. A successful exploit could allow the attacker to cause Cisco Secure Client Software to crash, resulting in a DoS condition on the client software. Note: Cisco Secure Client Software releases 4.10 and earlier were known as Cisco AnyConnect Secure Mobility Client.
EPSS: 0.006 (44.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
Affected products
- Cisco Anyconnect_secure_mobility_client — versions 4.9.00086, 4.9.01095, 4.9.02028
- Cisco Secure Client — versions 4.9.00086, 4.9.01095, 4.9.02028
- Cisco Secure_client — versions 4.10.00093, 4.10.01075, 4.10.02086
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@cisco.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2024-20474?
- CVE-2024-20474 is a medium-severity vulnerability in Cisco Anyconnect Secure Mobility Client, classified under Integer Underflow. CVSS score: 4.3/10. Published 2024-10-23.
- How severe is CVE-2024-20474?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2024-20474 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.