Riskcovery

CVE-2025-20248

Cisco IOS XR Software Image Verification Bypass Vulnerability

State
Published
Severity
6.0 Medium
Published
Sep 10, 2025
Updated
Feb 26, 2026
Reserved
Oct 10, 2024

Read the record on cve.org

Description

A vulnerability in the installation process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR Software image signature verification and load unsigned software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device.

This vulnerability is due to incomplete validation of files during the installation of an .iso file. An attacker could exploit this vulnerability by modifying contents of the .iso image and then installing and activating it on the device. A successful exploit could allow the attacker to load an unsigned file as part of the image activation process.

Scores

CVSSScoreVectorSource
3.16.0 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Ncisco

Weaknesses

  • CWE-347 Improper Verification of Cryptographic Signature

Affected Products

ProductVersions
Cisco IOS XR SoftwareCisco
  • 6.5.3Affected
  • 6.5.29Affected
  • 6.5.1Affected
  • 6.6.1Affected
  • 6.5.2Affected
  • 6.5.92Affected
  • 6.5.15Affected
  • 6.6.2Affected
  • 7.0.1Affected
  • 6.6.25Affected
  • 6.5.26Affected
  • 6.6.11Affected
  • 6.5.25Affected
  • 6.5.28Affected
  • 6.5.93Affected
  • 6.6.12Affected
  • 6.5.90Affected
  • 7.0.0Affected
  • 7.1.1Affected
  • 7.0.90Affected
  • 6.6.3Affected
  • 6.7.1Affected
  • 7.0.2Affected
  • 7.1.15Affected
  • 7.2.0Affected
  • and 65 more versions

References

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