What’s Vulnerable › Vulnerabilities
CVE-2025-20248: Cisco IOS XR Software Image Verification Bypass Vulnerability
- Severity: medium (CVSS 6.0 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-09-10 · updated 2026-09-26
- Weakness: CWE-347
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.
Affected products
- Cisco IOS XR Software: 6.5.1, 6.5.2, 6.5.3, 6.5.15, 6.5.25, 6.5.26 (+84)
References
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