PT-2025-20252 · Cisco · Cisco Ios Xe

Jakub Marciniszyn · Published 2025-05-07 · Updated 2025-05-07 · CVE-2025-20155

Positive Technologies (AI Summary)

CVSS v2.0

6.2

Medium

Base vector

AV:L/AC:L/Au:S/C:C/I:C/A:N

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software (affected versions not specified)

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 issue 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 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-1287

Related Identifiers

BDU:2025-10329

CVE-2025-20155

Affected Products

Cisco Ios Xe

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2025-20155 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bootstrap-KfgxYgdh#fs · Vendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bootstrap-KfgxYgdh · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-20155 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-10329 · Security Note
• https://twitter.com/CVEnew/status/1920246406360519150 · Twitter Post