CVSS 3.1
7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2025-26599
High (7.8). EPSS 0.4% chance of exploitation in the next 30 days.
An access to an uninitialized pointer flaw was found in X.Org and Xwayland. The function compCheckRedirect() may fail if it cannot allocate the backing pixmap. In that case, compRedirectWindow() will return a BadAlloc error without validating the window tree marked just before, which leaves the validated data partly initialized and the use of an uninitialized pointer later.
Severity
- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 34% of CVEs (scores of 2026-10-31)
- CWE
- CWE-824
- Published
- Modified
- Record from
- the NVD, synced
Affected
- redhat:enterprise_linux
- tigervnc:tigervnc
- x.org:x_server
- x.org:xwayland