Gnupg
Gnupg Libgcrypt: vulnerabilities and CVEs
Gnupg Libgcrypt has 19 published vulnerabilities, 2 of them in the last 12 months. 0 are rated critical and 0 are listed by CISA as actively exploited.
CVEs19
Last 12 months2
Critical0
Actively exploited0
All vulnerabilities in the catalogue →⭐ Follow this technology
Latest vulnerabilities
| CVE | Severity | EPSS | Active exploitation | Published | Description |
|---|---|---|---|---|---|
| CVE-2026-41990 | Medium (4) | 0.18% | — | Apr 23, 2026 | Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data. |
| CVE-2026-41989 | Medium (6.7) | 0.19% | — | Apr 23, 2026 | Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt. |
| CVE-2025-8277 | Low (3.1) | 0.41% | — | Sep 9, 2025 | A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust… |
| CVE-2024-2236 | Medium (5.9) | 1.1% | — | Mar 6, 2024 | A timing-based side-channel flaw was found in libgcrypt's RSA implementation. This issue may allow a remote attacker to initiate a Bleichenbacher-style attack, which can lead to the decryption of RSA ciphertexts. |
| CVE-2021-40528 | Medium (5.9) | 1.4% | — | Sep 6, 2021 | The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's… |
| CVE-2021-33560 | High (7.5) | 2.3% | — | Jun 8, 2021 | Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This,… |
| CVE-2021-3345 | High (7.8) | 1.1% | — | Jan 29, 2021 | _gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest final function sets a large count value. It is recommended to upgrade to 1.9.1 or later. |
| CVE-2015-0837 | Medium (5.9) | 2.0% | — | Nov 29, 2019 | The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular… |
| CVE-2014-3591 | Medium (4.2) | 0.58% | — | Nov 29, 2019 | Libgcrypt before 1.6.3 and GnuPG before 1.4.19 does not implement ciphertext blinding for Elgamal decryption, which allows physically proximate attackers to obtain the server's private key by determining factors using… |
| CVE-2019-12904 | Medium (5.9) | 2.1% | — | Jun 20, 2019 | In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an… |
| CVE-2017-7526 | Medium (6.8) | 3.8% | — | Jul 26, 2018 | libgcrypt before version 1.7.8 is vulnerable to a cache side-channel attack resulting into a complete break of RSA-1024 while using the left-to-right method for computing the sliding-window expansion. The same attack is… |
| CVE-2018-0495 | Medium (4.7) | 0.89% | — | Jun 13, 2018 | Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign… |
| CVE-2018-6829 | High (7.5) | 1.8% | — | Feb 7, 2018 | cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaintexts, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not… |
| CVE-2017-0379 | High (7.5) | 3.5% | — | Aug 29, 2017 | Libgcrypt before 1.8.1 does not properly consider Curve25519 side-channel attacks, which makes it easier for attackers to discover a secret key, related to cipher/ecc.c and mpi/ec.c. |
| CVE-2017-9526 | Medium (5.9) | 2.3% | — | Jun 11, 2017 | In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to… |
| CVE-2016-6313 | Medium (5.3) | 3.6% | — | Dec 13, 2016 | The mixing functions in the random number generator in Libgcrypt before 1.5.6, 1.6.x before 1.6.6, and 1.7.x before 1.7.3 and GnuPG before 1.4.21 make it easier for attackers to obtain the values of 160 bits by… |
| CVE-2015-7511 | Low (2) | 0.43% | — | Apr 19, 2016 | Libgcrypt before 1.6.5 does not properly perform elliptic-point curve multiplication during decryption, which makes it easier for physically proximate attackers to extract ECDH keys by measuring electromagnetic… |
| CVE-2014-5270 | Low (2.1) | 0.53% | — | Oct 10, 2014 | Libgcrypt before 1.5.4, as used in GnuPG and other products, does not properly perform ciphertext normalization and ciphertext randomization, which makes it easier for physically proximate attackers to conduct… |
| CVE-2013-4242 | Low (1.9) | 0.53% | — | Aug 19, 2013 | GnuPG before 1.4.14, and Libgcrypt before 1.5.3 as used in GnuPG 2.0.x and possibly other products, allows local users to obtain private RSA keys via a cache side-channel attack involving the L3 cache, aka Flush+Reload. |