CVE-2026-41989 | gnupg Libgcrypt up to 1.10.3/1.11.2/1.12.1 ECDH gcry_pk_decrypt out-of-bounds write

VDB-359119 · CVE-2026-41989 · GCVE-0-2026-41989 GNUPG LIBGCRYPT UP TO 1.10.3/1.11.2/1.12.1 ECDH GCRY_PK_DECRYPT OUT-OF-BOUNDS WRITE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.9 $0-$5k 2.83+ Summaryinfo A vulnerability was found in gnupg Libgcrypt up to 1.10.3/1.11.2/1.12.1. It has been classified as critical. This affects the function gcry_pk_decrypt of the component ECDH Handler. This manipulation causes out-of-bounds write. The identification of this vulnerability is CVE-2026-41989. The attack can only be executed locally. There is no exploit available. Upgrading the affected component is recommended. Detailsinfo A vulnerability classified as critical was found in gnupg Libgcrypt up to 1.10.3/1.11.2/1.12.1. Affected by this vulnerability is the function gcry_pk_decrypt of the component ECDH Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is: Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt. It is possible to read the advisory at lists.gnupg.org. This vulnerability is known as CVE-2026-41989 since 04/23/2026. The exploitation appears to be easy. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit. Upgrading to version 1.10.4, 1.11.3 or 1.12.2 eliminates this vulnerability. Productinfo Vendor gnupg Name Libgcrypt Version 1.10.0 1.10.1 1.10.2 1.10.3 1.11.0 1.11.1 1.11.2 1.12.0 1.12.1 License open-source CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 6.0 VulDB Meta Temp Score: 5.9 VulDB Base Score: 5.3 VulDB Temp Score: 5.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 6.7 CNA Vector (MITRE): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Out-of-bounds write CWE: CWE-787 / CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: No Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Libgcrypt 1.10.4/1.11.3/1.12.2 Timelineinfo 04/23/2026 Advisory disclosed 04/23/2026 +0 days CVE reserved 04/23/2026 +0 days VulDB entry created 04/23/2026 +0 days VulDB entry last update Sourcesinfo Advisory: lists.gnupg.org Status: Confirmed CVE: CVE-2026-41989 (🔒) GCVE (CVE): GCVE-0-2026-41989 GCVE (VulDB): GCVE-100-359119 Entryinfo Created: 04/23/2026 07:21 Changes: 04/23/2026 07:21 (65) Complete: 🔍 Cache ID: 99:17E:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸