CVE Database · CVE-2024-20309
CVSS v3.1
5.6
EPSS
0.10%
Published
Mar 27, 2024
Modified
Jul 30, 2025
Public PoC / Exploit (1)
All weaponized →Links to public security research (Exploit-DB, Nuclei, Trickest, GitHub) for defensive use only.
Description
A vulnerability in auxiliary asynchronous port (AUX) functions of Cisco IOS XE Software could allow an authenticated, local attacker to cause an affected device to reload or stop responding. This vulnerability is due to the incorrect handling of specific ingress traffic when flow control hardware is enabled on the AUX port. An attacker could exploit this vulnerability by reverse telnetting to the AUX port and sending specific data after connecting. A successful exploit could allow the attacker to cause the device to reset or stop responding, resulting in a denial of service (DoS) condition.
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:HWeaknesses (CWE)
Affected Products (343)
References (2)
...and 293 more