Vulnerability · Published Sep 24, 2025 · Assigned by cisco

CVE-2025-20149

Medium 6.5

In plain English

A medium-severity buffer overflow in Cisco IOS XE Software from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.2%top 84.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability in the CLI of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, local attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to a buffer overflow. An attacker with a low-privileged account could exploit this vulnerability by using crafted commands at the CLI prompt. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Affected products (as reported)

Vendor	Product	Versions
Cisco	IOS	15.2(1)S15.2(2)S15.2(1)S115.2(4)S15.2(1)S215.2(2)S115.2(2)S215.2(2)S0a
Cisco	Cisco IOS XE Software	3.7.0S3.7.1S3.7.2S3.7.3S3.7.4S3.7.5S3.7.6S3.7.7S

Weakness: CWE-120 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

References

cisco-sa-ios-cli-EB7cZ6yO