Denial-of-Service Vulnerability in Cisco IOS Software Web UI
CVE-2025-20327

7.7HIGH

Key Information:

Vendor

Cisco
Status
iOS
Vendor
CVE Published:
24 September 2025

Badges

👾 Exploit Exists

What is CVE-2025-20327?

A vulnerability exists in the web UI of Cisco IOS Software due to improper input validation. This flaw permits an authenticated, remote attacker with low privileges to craft specific HTTP requests that exploit the vulnerability. If successfully executed, this attack could lead to a denial of service condition, forcing the affected device to reload and become temporarily unavailable. Organizations using Cisco IOS Software should assess their systems and apply necessary patches to safeguard against potential exploitation.

Affected Version(s)

IOS 15.2(6)E2

IOS 15.2(7)E

IOS 15.2(6)E2a

References

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

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

JSON
.
CVE-2025-20327 : Denial-of-Service Vulnerability in Cisco IOS Software Web UI