Is CVE-2023-6377 actively exploited?

CVE-2023-6377 has no public evidence of in-the-wild exploitation as of 2025-08-18.

What is the CVSS score for CVE-2023-6377?

CVE-2023-6377 has a CVSS score of 7.8 (HIGH severity). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2023-6377?

Patch guidance is available from redhat security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2023-6377.

Fix CVE-2023-6377 - HIGH redhat enterprise linux eus

Q: Which products are affected by CVE-2023-6377?

7 products: redhat enterprise linux eus, debian debian linux, debian debian linux, debian debian linux, x.org x server, and 2 more.

Description

A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: local
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-125 · Out-of-bounds Read CWE-125 · Out-of-bounds Read

Metadata

Primary Vendor: REDHAT
Published: 12/13/2023
Last Modified: 8/18/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

redhat : enterprise_linux_eusdebian : debian_linuxdebian : debian_linuxdebian : debian_linuxx.org : x_serverx.org : xwaylandtigervnc : tigervnc

Remediation Guidance

Executive Summary

View on NIST NVD