CVE-2025-20177
published 2025-03-12CVE-2025-20177: A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR image signature verification…
PriorityP433medium6.7CVSS 3.1
AVLACLPRHUINSUCHIHAH
EPSS
0.14%
4.1th percentile
A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR image signature verification 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 incomplete validation of files in the boot verification process. An attacker could exploit this vulnerability by manipulating the system configuration options to bypass some of the integrity checks that are performed during the boot process. A successful exploit could allow the attacker to control the boot configuration, which could enable them to bypass the requirement to run Cisco-signed images or alter the security properties of the running system.
Note: Because exploitation of this vulnerability could result in the attacker bypassing Cisco image verification, Cisco has raised the Security Impact Rating (SIR) of this advisory from Medium to High.
Affected
72 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
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| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
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| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
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| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
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CVSS provenance
nvdv3.16.7MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
vendor_cisco6.7MEDIUM
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GHSA
GHSA-hghx-c858-jm7q: A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR image signature verif
ghsa_unreviewed·2025-03-12
CVE-2025-20177 [MEDIUM] CWE-274 GHSA-hghx-c858-jm7q: A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR image signature verif
A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR image signature verification 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 incomplete validation of files in the boot verification process. An attacker could exploit this vulnerability by manipulating the system configuration options to bypass some of the integrity checks that are performed during the boot process. A successful exploit could allow the attacker to control the boot configuration, which could enable them to bypass the requirement to run Cisco-signed images or alter the security properties of the running system.
Not
Cisco
Cisco IOS XR Software Image Verification Bypass Vulnerability
vendor_cisco·2025-03-12·CVSS 6.7
CVE-2025-20177 [MEDIUM] CWE-274 Cisco IOS XR Software Image Verification Bypass Vulnerability
Cisco IOS XR Software Image Verification Bypass Vulnerability
A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR image signature verification 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 incomplete validation of files in the boot verification process. An attacker could exploit this vulnerability by manipulating the system configuration options to bypass some of the integrity checks that are performed during the boot process. A successful exploit could allow the attacker to control the boot configuration, which could enable them to bypass the requirement to run Cisco-signed ima
Cisco
Cisco IOS XR Software Image Verification Bypass Vulnerability
vendor_cisco·CVSS 3.1
CVE-2025-20177 Cisco IOS XR Software Image Verification Bypass Vulnerability
CVE-2025-20177: Cisco IOS XR Software Image Verification Bypass Vulnerability
A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR image signature verification 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 incomplete validation of files in the boot verification process. An attacker could exploit this vulnerability by manipulating the system configuration options to bypass some of the integrity checks that are performed during the boot process. A successful exploit could allow the attacker to control the boot configuration, which could enable them to bypass the requirement to run Ci
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-03-12
Published