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CVE-2025-20314

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CVE-2025-20314

Published: Sep 24, 2025

Modified: Feb 26, 2026

PUBLISHED

CVSS v3.1

6.7

MEDIUM

Description

A vulnerability in Cisco IOS XE Software could allow an authenticated, local attacker with level-15 privileges or an unauthenticated attacker with physical access to an affected device to execute persistent code at boot time and break the chain of trust. This vulnerability is due to improper validation of software packages. An attacker could exploit this vulnerability by placing a crafted file into a specific location on an affected device. A successful exploit could allow the attacker to execute persistent code on the underlying operating system. Because this vulnerability allows an attacker to bypass a major security feature of a device, Cisco has raised the Security Impact Rating (SIR) of this advisory from Medium to High.

VendorProductVersions

Cisco

Cisco IOS XE Software

affected
17.3.1
affected
17.3.2
affected
17.3.3
affected
17.3.1a
affected
17.3.1w

+114 more versions

Weaknesses (CWE)

CWE-232

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

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