CVE-2026-41989 — Buffer Overflow
CVE-2026-41989 — Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.
What This Means For You
- If your environment is affected by CWE-787, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-41989 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
2 rules · 6 SIEM formats2 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-41989 Libgcrypt ECDH Ciphertext Heap Overflow Attempt
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-41989 | vulnerability | CVE-2026-41989 |
| CWE-787 | weakness | CWE-787 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 23, 2026 at 08:16 UTC |
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