🛡️ CVE-2025-20155
🟡 CVSS 6.0 — Medium ✅ No Known Exploit CWE-1287 NVD
6.0
CVSS Score
0 Low4 Medium7 High9 Critical10

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. 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.

Details

Severity MEDIUM
CVSS Score 6.0
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
CWE CWE-1287
Public Exploit ✅ No
Source NVD
Published 2025-05-07
Updated 2026-06-02
Modified 2025-07-31
Fix URL N/A

Affected Packages

Software From version Fixed in
ios-xe

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