Heap-based buffer overflow in Microsoft Windows DNS allows an unauthorized attacker to execute code over a network.
Loading...
Loading...
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-12. NVD baseline CVSS 9.8; sources differ by 0.0.
Heap-based buffer overflow in Microsoft Windows DNS allows an unauthorized attacker to execute code over a network.
May 12, 2026
June 5, 2026
Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41096These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
Working exploit code is in the public domain (4 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
Attack surface in the real-world environment of CVE-2026-41096
Open source ↗windows api bug
Open source ↗CVE-2026-41096: Heap Overflow in the Windows DNS Client
Open source ↗In‑depth technical analysis of CVE‑2026‑41096, a critical heap overflow in Windows DNSAPI.dll enabling remote code execution via crafted DNS responses. Includes attack vectors, patch insights, and defensive guidance for security teams.
Open source ↗See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-41096
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.
msrc
CWE-122