CVE-2025-26600

HIGH

Tigervnc < 21.1.16 - Use After Free

Title source: rule
STIX 2.1

Description

A use-after-free flaw was found in X.Org and Xwayland. When a device is removed while still frozen, the events queued for that device remain while the device is freed. Replaying the events will cause a use-after-free.

References (19)

Core 19
Core References
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:2500
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:2502
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:2861
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:2862
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:2865
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:2866
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:2873
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:2874
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:2875
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:2879
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:2880
Vendor Advisory vendor-advisory x_refsource_redhat
RHSA-2025:3976
https://access.redhat.com/errata/RHSA-2025:3976
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:7163
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:7165
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:7458
Third Party Advisory vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2025-26600
Issue Tracking issue-tracking x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2345252

Scores

CVSS v3 7.8
EPSS 0.0003
EPSS Percentile 10.4%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-416
Status published
Products (27)
Red Hat/Red Hat Enterprise Linux 10 0:24.1.5-3.el10_0
Red Hat/Red Hat Enterprise Linux 6
Red Hat/Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION 0:1.1.0-25.el6_10
Red Hat/Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:1.20.4-30.el7_9
Red Hat/Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:1.8.0-36.el7_9
Red Hat/Red Hat Enterprise Linux 8
Red Hat/Red Hat Enterprise Linux 8 0:1.13.1-15.el8_10
Red Hat/Red Hat Enterprise Linux 8.2 Advanced Update Support 0:1.9.0-15.el8_2.13
Red Hat/Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:1.11.0-8.el8_4.12
Red Hat/Red Hat Enterprise Linux 8.4 Telecommunications Update Service 0:1.11.0-8.el8_4.12
... and 17 more
Published Feb 25, 2025
Tracked Since Feb 18, 2026