CVE-2025-20143

CWE-3474 documents4 sources
Severity
6.7MEDIUM
EPSS
0.0%
top 94.88%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Cisco IOS XRCisco Cisco IOS XR Software
Timeline
PublishedMar 12

Description

A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Boot functionality and load unverified 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 insufficient verification of modules in the software load process. An attacker could exploit this vulnerability by manipulating the loaded binaries to…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HExploitability: 0.8 | Impact: 5.9

Affected Packages2 packages

▶CVEListV5cisco/cisco_ios_xr_software59 versions+58
▶NVDcisco/ios_xr< 7.9.1

🔴Vulnerability Details

2
CVEList
Cisco IOS XR Software Secure Boot Bypass Vulnerability↗2025-03-12
▶
GHSA
GHSA-2w36-grgh-xprc: A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Bo↗2025-03-12
▶

📋Vendor Advisories

1
Cisco
Cisco IOS XR Software Secure Boot Bypass Vulnerability↗2025-03-12
▶