CVE-2026-41990 | gnupg Libgcrypt up to 1.12.1 out-of-bounds write

VDB-359120 · CVE-2026-41990 · GCVE-0-2026-41990 GNUPG LIBGCRYPT UP TO 1.12.1 OUT-OF-BOUNDS WRITE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.2 $0-$5k 1.89+ Summaryinfo A vulnerability was found in gnupg Libgcrypt up to 1.12.1. It has been declared as critical. This vulnerability affects unknown code. Such manipulation leads to out-of-bounds write. This vulnerability is referenced as CVE-2026-41990. The attack can only be performed from a local environment. No exploit is available. It is recommended to upgrade the affected component. Detailsinfo A vulnerability, which was classified as critical, has been found in gnupg Libgcrypt up to 1.12.1. Affected by this issue is some unknown processing. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes: Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data. The advisory is shared for download at lists.gnupg.org. This vulnerability is handled as CVE-2026-41990 since 04/23/2026. The exploitation is known to be difficult. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available. Upgrading to version 1.12.2 eliminates this vulnerability. Productinfo Vendor gnupg Name Libgcrypt Version 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: 4.3 VulDB Meta Temp Score: 4.2 VulDB Base Score: 4.5 VulDB Temp Score: 4.3 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 4.0 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 1.12.2 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-2026-41990 (🔒) GCVE (CVE): GCVE-0-2026-41990 GCVE (VulDB): GCVE-100-359120 Entryinfo Created: 04/23/2026 07:21 Changes: 04/23/2026 07:21 (63) Complete: 🔍 Cache ID: 99:4CA:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸