← Vulnerability feed

Vulnerability record · CVE-2025-62230 · published 30 October 2025

CVE-2025-62230: X.org x server use after free vulnerability

XX.Org · X Server

A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a crash when affected clients disconnect.

7.3 CVSS 3.1 High EPSS 0.26% · top 83.7% CWE-416 · Use after free
7.3CVSS 3.1 base score
0.26%EPSS exploitation probability, 30 days
NoNot in CISA KEV
11Affected product versions listed by NVD
38References
1 Jul 2026Last modified by NVD

Description

A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a crash when affected clients disconnect.

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

Affected products

11 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2025:19432 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:19433 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:19434 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:19435 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:19489 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:19623 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:19909 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:20958 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:20960 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:20961 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:21035 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22040 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22041 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22051 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22055 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22056 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22077 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22096 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22164 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22167 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22364 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22365 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22426 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22427 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22667 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22729 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22742 Third Party Advisory
https://access.redhat.com/errata/RHSA-2025:22753 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:0031 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:0033 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:0034 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:0035 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:0036 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2025-62230 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2402653 Issue TrackingThird Party Advisory
https://lists.x.org/archives/xorg-announce/2025-October/003635.html Mailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2025/10/28/7 Mailing ListPatch
https://lists.debian.org/debian-lts-announce/2025/10/msg00033.html Mailing ListThird Party Advisory

Track CVE-2025-62230 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2025-32433Erlang/OTP SSH server missing authentication allows remote code executionErlang/OTP SSH servers before OTP-27.3.3, OTP-26.2.5.11 and OTP-25.3.2.20 mishandle SSH protocol messages, letting an unauthenticated attacker execut…KEVEPSS 99%analysed10.0CVE-2025-24201Apple WebKit out-of-bounds write allows sandbox escapeCVE-2025-24201 is an out-of-bounds write in Apple's WebKit that was addressed with improved checks. Maliciously crafted web content may break out of …KEVEPSS 3.8%analysed10.0CVE-2021-44228Apache Log4j2 JNDI lookup remote code executionApache Log4j2 versions 2.0-beta9 through 2.15.0 (excluding 2.12.2, 2.12.3, and 2.3.1) do not protect against attacker-controlled LDAP and other JNDI …KEVEPSS 100%analysed9.8CVE-2026-24061GNU Inetutils telnetd argument injection allows remote auth bypasstelnetd in GNU Inetutils through 2.7 fails to sanitize the USER environment variable, so a value such as "-f root" is passed as an argument to login …KEVEPSS 99%analysed9.8CVE-2025-39682Linux kernel TLS zero-length record handling flaw on rx_listThe Linux kernel TLS receive path mishandles zero-length records that arrive from the rx_list, breaking the assumption that a record type change cann…KEVEPSS 2.9%analysed9.8CVE-2025-24813Apache Tomcat Default Servlet path equivalence enables RCE and file disclosureApache Tomcat mishandles path equivalence for names containing an internal dot, letting a remote unauthenticated attacker write files through the Def…KEVEPSS 100%analysed9.8CVE-2024-9680Mozilla Firefox and Thunderbird use-after-free in Animation timelinesA use-after-free flaw in Animation timelines allows an attacker to execute code in the content process of Firefox and Thunderbird. Mozilla reports ex…KEVEPSS 23%analysed9.8CVE-2023-46604Apache ActiveMQ OpenWire deserialization remote code executionThe Java OpenWire protocol marshaller in Apache ActiveMQ deserializes untrusted data, letting an attacker manipulate serialized class types so the br…KEVEPSS 100%analysed

Source: NIST National Vulnerability Database (record CVE-2025-62230), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.