CVE-2025-20248 — Cisco IOS XR Software Image Verification Bypass Vulnerability

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Cisco / Cisco IOS XR Software	affected 6.5.3; affected 6.5.29; affected 6.5.1; affected 6.6.1; affected 6.5.2; affected 6.5.92; affected 6.5.15; affected 6.6.2; affected 7.0.1; affected 6.6.25; affected 6.5.26; affected 6.6.11; affected 6.5.25; affected 6.5.28; affected 6.5.93; affected 6.6.12; affected 6.5.90; affected 7.0.0; affected 7.1.1; affected 7.0.90; affected 6.6.3; affected 6.7.1; affected 7.0.2; affected 7.1.15; affected 7.2.0; affected 7.2.1; affected 7.1.2; affected 6.7.2; affected 7.1.25; affected 6.6.4; affected 7.3.1; affected 7.1.3; affected 6.7.3; affected 7.4.1; affected 7.2.2; affected 6.5.31; affected 6.8.1; affected 7.4.15; affected 6.5.32; affected 7.3.2; affected 7.5.1; affected 7.4.16; affected 7.3.27; affected 7.6.1; affected 7.5.2; affected 7.6.15; affected 7.3.3; affected 7.7.1; affected 6.8.2; affected 7.3.4; affected 7.4.2; affected 6.7.35; affected 6.9.1; affected 7.6.2; affected 7.8.1; affected 7.5.3; affected 7.7.2; affected 6.9.2; affected 7.9.1; affected 7.8.2; affected 7.5.4; affected 6.5.33; affected 7.8.22; affected 7.10.1; affected 7.7.21; affected 7.9.2; affected 7.3.5; affected 7.5.5; affected 7.11.1; affected 7.9.21; affected 7.10.2; affected 7.6.3; affected 24.1.1; affected 7.3.6; affected 7.11.2; affected 24.2.1; affected 24.1.2; affected 24.2.11; affected 24.3.1; affected 24.4.1; affected 24.2.2; affected 7.8.23; affected 7.11.21; affected 24.2.20; affected 24.3.2; affected 24.4.10; affected 6.5.35; affected 24.4.15; affected 6.5.351; affected 6.5.352

Vendor / product

Versions

Cisco / Cisco IOS XR Software

affected 6.5.3; affected 6.5.29; affected 6.5.1; affected 6.6.1; affected 6.5.2; affected 6.5.92; affected 6.5.15; affected 6.6.2; affected 7.0.1; affected 6.6.25; affected 6.5.26; affected 6.6.11; affected 6.5.25; affected 6.5.28; affected 6.5.93; affected 6.6.12; affected 6.5.90; affected 7.0.0; affected 7.1.1; affected 7.0.90; affected 6.6.3; affected 6.7.1; affected 7.0.2; affected 7.1.15; affected 7.2.0; affected 7.2.1; affected 7.1.2; affected 6.7.2; affected 7.1.25; affected 6.6.4; affected 7.3.1; affected 7.1.3; affected 6.7.3; affected 7.4.1; affected 7.2.2; affected 6.5.31; affected 6.8.1; affected 7.4.15; affected 6.5.32; affected 7.3.2; affected 7.5.1; affected 7.4.16; affected 7.3.27; affected 7.6.1; affected 7.5.2; affected 7.6.15; affected 7.3.3; affected 7.7.1; affected 6.8.2; affected 7.3.4; affected 7.4.2; affected 6.7.35; affected 6.9.1; affected 7.6.2; affected 7.8.1; affected 7.5.3; affected 7.7.2; affected 6.9.2; affected 7.9.1; affected 7.8.2; affected 7.5.4; affected 6.5.33; affected 7.8.22; affected 7.10.1; affected 7.7.21; affected 7.9.2; affected 7.3.5; affected 7.5.5; affected 7.11.1; affected 7.9.21; affected 7.10.2; affected 7.6.3; affected 24.1.1; affected 7.3.6; affected 7.11.2; affected 24.2.1; affected 24.1.2; affected 24.2.11; affected 24.3.1; affected 24.4.1; affected 24.2.2; affected 7.8.23; affected 7.11.21; affected 24.2.20; affected 24.3.2; affected 24.4.10; affected 6.5.35; affected 24.4.15; affected 6.5.351; affected 6.5.352

CWE

CWE-347

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xrsig-UY4zRUCG

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.