CVE-2026-57966

Publication date 29 June 2026

Last updated 16 July 2026

Ubuntu priority

Cvss 3 Severity Score

Description

A path traversal vulnerability was found in spice-vdagent. This flaw allows a malicious or compromised SPICE host to write arbitrary files to any location on the guest operating system. This occurs because the filename provided by the SPICE host during file transfers is not properly sanitized before being used. An attacker could exploit this to write to sensitive locations with the privileges of the spice-vdagent process, typically the logged-in user. This issue requires the SPICE host to be untrusted or compromised for exploitation.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
spice-vdagent	26.04 LTS resolute	Vulnerable, fix deferred
	25.10 questing	Ignored end of life, was needs-triage
	24.04 LTS noble	Vulnerable, fix deferred
	22.04 LTS jammy	Vulnerable, fix deferred
	20.04 LTS focal	Vulnerable, fix deferred
	18.04 LTS bionic	Vulnerable, fix deferred

Notes

mdeslaur

as of 2026-07-16, there is no fix for this issue available from spice-vdagent developers

Severity score breakdown

CVSS version: CVSS v3.0

Base score 4.4 · Medium

Base metrics

Parameter	Value
Attack vector	Local
Attack complexity	Low
Privileges required	High
User interaction	None
Scope	Unchanged
Confidentiality impact	None
Integrity impact	High
Availability impact	None

Scores

Parameter	Value
Base score	4.4 · Medium
Exploitability score	-
Impact score	-

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