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.

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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

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