Buffer overflow in Cisco Aireos
CVE-2023-20251
A vulnerability in the memory buffer of Cisco Wireless LAN Controller (WLC) AireOS Software could allow an unauthenticated, adjacent attacker to cause memory leaks that could eventually lead to a device reboot. This vulnerability is due to memory leaks caused by multiple clients connecting under specific conditions. An attacker could exploit this vulnerability by causing multiple wireless clients to attempt to connect to an access point (AP) on an affected device. A successful exploit could allow the attacker to cause the affected device to reboot after a significant amount of time, resulting in a denial of service (DoS) condition.
EPSS: 0.002 (13.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Cisco Aireos
- Cisco Mobility Express — versions 8.10.183.0, 8.10.162.0, 8.10.151.0
- Cisco Wireless Lan Controller (Wlc) — versions 8.10.162.0, 8.10.151.0, 8.10.171.0
- Cisco Mobility_express_software
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@cisco.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-20251?
- CVE-2023-20251 is a medium-severity vulnerability in Cisco Aireos, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 6.1/10. Published 2023-09-27.
- How severe is CVE-2023-20251?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2023-20251 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.