CVE-2025-20248

EUVD-2025-27575
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6 MEDIUM
LOCAL
LOW
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 0.7%
Affected Products (NVD)
VendorProductVersion
ciscoios_xr
6.5.1
ciscoios_xr
6.5.2
ciscoios_xr
6.5.3
ciscoios_xr
6.5.15
ciscoios_xr
6.5.25
ciscoios_xr
6.5.26
ciscoios_xr
6.5.28
ciscoios_xr
6.5.29
ciscoios_xr
6.5.31
ciscoios_xr
6.5.32
ciscoios_xr
6.5.33
ciscoios_xr
6.5.35
ciscoios_xr
6.5.90
ciscoios_xr
6.5.92
ciscoios_xr
6.5.93
ciscoios_xr
6.5.351
ciscoios_xr
6.5.352
ciscoios_xr
6.6.1
ciscoios_xr
6.6.2
ciscoios_xr
6.6.3
ciscoios_xr
6.6.4
ciscoios_xr
6.6.11
ciscoios_xr
6.6.12
ciscoios_xr
6.6.25
ciscoios_xr
6.7.1
ciscoios_xr
6.7.2
ciscoios_xr
6.7.3
ciscoios_xr
6.7.35
ciscoios_xr
6.8.1
ciscoios_xr
6.8.2
ciscoios_xr
6.9.1
ciscoios_xr
6.9.2
ciscoios_xr
7.0.0
ciscoios_xr
7.0.1
ciscoios_xr
7.0.2
ciscoios_xr
7.0.90
ciscoios_xr
7.1.1
ciscoios_xr
7.1.2
ciscoios_xr
7.1.3
ciscoios_xr
7.1.15
ciscoios_xr
7.1.25
ciscoios_xr
7.2.0
ciscoios_xr
7.2.1
ciscoios_xr
7.2.2
ciscoios_xr
7.3.1
ciscoios_xr
7.3.2
ciscoios_xr
7.3.3
ciscoios_xr
7.3.4
ciscoios_xr
7.3.5
ciscoios_xr
7.3.6
ciscoios_xr
7.3.27
ciscoios_xr
7.4.1
ciscoios_xr
7.4.2
ciscoios_xr
7.4.15
ciscoios_xr
7.4.16
ciscoios_xr
7.5.1
ciscoios_xr
7.5.2
ciscoios_xr
7.5.3
ciscoios_xr
7.5.4
ciscoios_xr
7.5.5
ciscoios_xr
7.6.1
ciscoios_xr
7.6.2
ciscoios_xr
7.6.3
ciscoios_xr
7.6.15
ciscoios_xr
7.7.1
ciscoios_xr
7.7.2
ciscoios_xr
7.7.21
ciscoios_xr
7.8.1
ciscoios_xr
7.8.2
ciscoios_xr
7.8.22
ciscoios_xr
7.8.23
ciscoios_xr
7.9.1
ciscoios_xr
7.9.2
ciscoios_xr
7.9.21
ciscoios_xr
7.10.1
ciscoios_xr
7.10.2
ciscoios_xr
7.11.1
ciscoios_xr
7.11.2
ciscoios_xr
7.11.21
ciscoios_xr
24.1.1
ciscoios_xr
24.1.2
ciscoios_xr
24.2.1
ciscoios_xr
24.2.2
ciscoios_xr
24.2.11
ciscoios_xr
24.2.20
ciscoios_xr
24.3.1
ciscoios_xr
24.3.2
ciscoios_xr
24.4.1
ciscoios_xr
24.4.10
ciscoios_xr
24.4.15
𝑥
= Vulnerable software versions