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    CVE-2026-41990

    Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.

    Published:Apr 23, 2026
    Last Modified:Apr 28, 2026
    EPS:Apr 23, 2026
    EPSS Score:0.00012
    CVSS Score:4

    Affected Products

    Vendor
    Gnupg
    Product
    Libgcrypt

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-41989 (CVSS 6.7) — Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH c…
    CVE-2021-40528 (CVSS 5.9) — The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction bet…
    CVE-2021-33560 (CVSS 7.5) — Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding…
    CVE-2021-3345 (CVSS 7.8) — _gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when …
    CVE-2019-12904 (CVSS 5.9) — In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack becaus…
    CVE-2018-0495 (CVSS 4.7) — Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures t…
    CVE-2018-6829 (CVSS 7.5) — cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaint…
    CVE-2017-0379 (CVSS 7.5) — Libgcrypt before 1.8.1 does not properly consider Curve25519 side-channel attacks, which makes it easier for a…
    CVE-2017-7526 (CVSS 6.1) — libgcrypt before version 1.7.8 is vulnerable to a cache side-channel attack resulting into a complete break of…
    CVE-2017-9526 (CVSS 5.9) — In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High