Information disclosure in X.org Xwayland
CVE-2025-49177
A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests.
Vulnerability class: Information Disclosure
EPSS: 0.004 (29.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L.
Affected products
- X.org Xwayland — versions 0
- Red Hat Enterprise Linux 10 — versions 0:24.1.5-4.el10_0
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9 — versions 0:1.20.11-31.el9_6, 0:23.2.7-4.el9_6
- Red Hat Enterprise Linux 9.4 Extended Update Support — versions 0:22.1.9-6.el9_4
- Red Hat In-vehicle Operating System 1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
- secalert@redhat.com
- secalert@redhat.com
Frequently asked questions
- What is CVE-2025-49177?
- CVE-2025-49177 is a medium-severity vulnerability in X.org Xwayland, classified under Information Disclosure. CVSS score: 6.1/10. Published 2025-06-17.
- How severe is CVE-2025-49177?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2025-49177 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.