CVE-2026-93515
NONE
Published: 2026-10-28
Modified: 2026-10-28
Enriched via mock
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AI Threat Summary
CVE-2026-93515 is a moderate vulnerability affecting the target software. Threat hunters should monitor for exploit attempts and apply vendor patches immediately.
Description
A use-after-free in present_clear_window_notifies() in the X.org X Server before 21.1.25 and X Wayland before 24.1.14 could be used by malicious X clients to crash or potentially execute code in the X server context.
Attack Chain
1
Reconnaissance
Attacker scans for vulnerable versions using version banners or PoC scanners
2
Initial Access
Attacker triggers CVE-2026-93515 vulnerability with a crafted request or payload
3
Execution
Vulnerability exploited to perform unauthorized actions on the target system
4
Impact
Depending on vulnerability type, attacker achieves data access, service disruption, or code execution
MITRE ATT&CK Techniques
Indicators of Compromise
| Type | Value | Description | |
|---|---|---|---|
| user_agent | Mozilla/5.0 (compatible; exploit/1.0) |
Generic exploit scanner user agent pattern | |
| url | /api/vuln-endpoint?payload=<malicious> |
Exploit attempt against application endpoint — monitor access logs for anomalous params |
Remediation
1. Apply vendor-supplied security patches immediately.
2. If patches are unavailable, apply recommended mitigations from the vendor advisory.
3. Enable WAF rules or IDS signatures to detect exploitation attempts.
4. Monitor logs for indicators of compromise listed above.
5. Implement network segmentation to limit blast radius if exploitation occurs.
6. Subscribe to vendor security advisories for this product.
Quick Facts
| CVE ID | CVE-2026-93515 |
| CVSS Score | N/A |
| Published | 2026-10-28 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |