Bypass Vulnerability in Cisco IOS XR Software Installation Process
CVE-2025-20248

6MEDIUM

Key Information:

Vendor

Cisco
Status
Cisco iOS Xr Software
Vendor
CVE Published:
10 September 2025

Badges

👾 Exploit Exists

What is CVE-2025-20248?

A flaw in the installation process of Cisco IOS XR Software allows authenticated, local attackers with root-system privileges to bypass software image signature verification. This weakness arises from inadequate validation of files during the installation of .iso files. An attacker could exploit this by altering the contents of an .iso image, thereby installing and activating it on the device. This exploitation could enable the execution of unsigned files during the image activation process, posing serious security risks.

Affected Version(s)

Cisco IOS XR Software 6.5.3

Cisco IOS XR Software 6.5.29

Cisco IOS XR Software 6.5.1

References

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

CVSS V3.1

Score:
6
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2025-20248 : Bypass Vulnerability in Cisco IOS XR Software Installation Process