Denial of Service Vulnerability in Cisco IOS and IOS XE Software
CVE-2025-20149

6.5MEDIUM

Key Information:

Vendor

Cisco
Status
iOS
Cisco iOS Xe Software
Vendor
CVE Published:
24 September 2025

Badges

👾 Exploit Exists

What is CVE-2025-20149?

A buffer overflow vulnerability exists in the command-line interface (CLI) of Cisco IOS and Cisco IOS XE Software, enabling an authenticated local attacker to execute crafted commands. This exploitation can lead to an unexpected device reload, triggering a denial of service (DoS) condition. Attackers with low-privileged accounts can potentially leverage this flaw to disrupt the availability of affected devices.

Affected Version(s)

Cisco IOS XE Software 3.7.0S

Cisco IOS XE Software 3.7.1S

Cisco IOS XE Software 3.7.2S

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-20149 : Denial of Service Vulnerability in Cisco IOS and IOS XE Software