CVE-2026-93520
Last modified
CVE-2026-93520 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A heap buffer overflow caused by mismatching size calculations between XkbAllocNames and ChangeKeycodeRange in X.org X server before 2.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context..
Description
A heap buffer overflow caused by mismatching size calculations between XkbAllocNames and ChangeKeycodeRange in X.org X server before 2.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| x.org | xorg-x11-server | < 21.1.25 |
| x.org | xwayland | < 24.1.14 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-93520?
How severe is CVE-2026-93520?
How do I fix CVE-2026-93520?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-93515A use-after-free in present_clear_window_notifies() in the …6.8
- CVE-2026-93516A use-after-free caused by lack of lifecycle management when…5.5
- CVE-2026-93517A heap buffer overflow in handling GLX RenderLarge request w…8.5
- CVE-2026-93518An integer truncation issue in XkbResizeKeyType() that could…7.8
- CVE-2026-93519A buffer overflow when handling pointer barriers in the XFIX…7.8
- CVE-2026-9352A weakness has been identified in NousResearch hermes-agent …5.5
- CVE-2026-93521A buffer overflow in RandR ChangeProviderProperty requests i…7.8
- CVE-2026-93522A heap buffer overflow caused by mismatched size usage in Co…7.8
- CVE-2026-93523A heap buffer overflow caused by a XIPassiveUngrabDevice req…7.8
- CVE-2026-93524A buffer overread in CheckKeySyms() in X.Org X Server before…6.9
- CVE-2026-93526Unauthenticated Cross Site Scripting (XSS) in Event Tickets …7.1
- CVE-2026-93527Contributor SQL Injection in Live Copy Paste for Elementor <…8.5
Are you affected by CVE-2026-93520?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST