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CVE-2025-20155

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
07/05/2025
Last modified:
31/07/2025

Description

A vulnerability in the bootstrap loading of Cisco IOS XE Software could allow an authenticated, local attacker to write arbitrary files to an affected system.<br /> <br /> This vulnerability is due to insufficient input validation of the bootstrap file that is read by the system software when a device is first deployed in SD-WAN mode or when an administrator configures SD-Routing on the device. An attacker could exploit this vulnerability by modifying a bootstrap file generated by Cisco Catalyst SD-WAN Manager, loading it into the device flash, and then either reloading the device in a green field deployment in SD-WAN mode or configuring the device with SD-Routing. A successful exploit could allow the attacker to perform arbitrary file writes to the underlying operating system.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 6.00 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x
6.00
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ios_xe:17.9.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.4a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.5:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.5a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.5b:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.5e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.5f:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.6:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.6a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.11.99sw:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.12.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.12.1a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.12.1w:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.12.1x:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.12.1y:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools