CVE-2025-20155

MEDIUM EPSS 4.4%
Published May 7, 20251y ago · Modified Jun 17, 20261w ago
6.0 CVSS 3.1
Medium
Find Similar
Published May 7, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
6.0
Exploitability
0.8
Impact
5.2
Vector string
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Attack Vector Local
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
4.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-1287

Affected Products 28

VendorProductVersionRange
ciscoios_xe17.9.4any
ciscoios_xe17.9.4aany
ciscoios_xe17.9.5any
ciscoios_xe17.9.5aany
ciscoios_xe17.9.5bany
ciscoios_xe17.9.5eany
ciscoios_xe17.9.5fany
ciscoios_xe17.9.6any
ciscoios_xe17.9.6aany
ciscoios_xe17.11.99swany
ciscoios_xe17.12.1any
ciscoios_xe17.12.1aany
ciscoios_xe17.12.1wany
ciscoios_xe17.12.1xany
ciscoios_xe17.12.1yany
ciscoios_xe17.12.1zany
ciscoios_xe17.12.1z1any
ciscoios_xe17.12.2any
ciscoios_xe17.12.2aany
ciscoios_xe17.12.3any
ciscoios_xe17.12.3aany
ciscoios_xe17.12.4any
ciscoios_xe17.12.4aany
ciscoios_xe17.12.4bany
ciscoios_xe17.13.1any
ciscoios_xe17.13.1aany
ciscoios_xe17.14.1any
ciscoios_xe17.14.1aany

References 1

  • sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bootstrap-KfgxYgdh
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.