CVE-2026-33999
CVE-2026-33999: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh7.8
High [CVE-2026-33999] X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling
CVE-2026-33999Source published
X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling. Red Hat rates this important (CVSS 7.8). Weakness: CWE-191. Affected package(s): tigervnc, xorg-x11-server-Xwayland, xorg-x11-server. Resolved in Red Hat advisory RHSA-2026:24341 — update the affected packages (`sudo dnf update`).
- Affected products in this advisory
- Red Hat Enterprise Linux 10.0 Extended Update Support
- Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION
- Red Hat Enterprise Linux 7 Extended Lifecycle Support
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
11 more entries in the full advisory.
- Source-reported affected versions
- tigervnc-0:1.11.0-8.el8_4.15
- xorg-x11-server-Xwayland-0:21.1.3-10.el9_2
- tigervnc-0:1.14.1-10.el9_6
- tigervnc-0:1.15.0-6.el9_7.1
8 more entries in the full advisory.
- Source-reported fixed versions
- RHSA-2026:24341
- Mitigation guidance
- Update the affected package(s) to the fixed version shipped in RHSA-2026:24341 (`sudo dnf update` / `yum update`).
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