Priority MEDIUM 49
GnuPG (version 2.5.21) for Windows contains a vulnerability where default Discretionary Access Control List (DACL) inheritance on the C:\ProgramData directory allows members of the BUILTIN\Users group to create arbitrary…
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.0043 · Published 2026-10-27 · No fix listed CWE-379
Priority LOW 16
gpgtar in GnuPG before 2.5.19 can allow file overwrite via crafted data in an archive.
CVSS 3.1LOW 3.6· Local · No auth · User interaction · EPSS 0.00128 · Published 2026-10-05 · Partial fix · 2.5.19 CWE-61
Priority LOW 13
CMS (Cryptographic Message Syntax) parsing in gpgsm in GnuPG through 2.5.20 mishandles the CMS format for AES-GCM because aes-ICVlen is supposed to be 12 bytes but 4 bytes is accepted.
CVSS 3.1LOW 2.9· Local · No auth · No interaction · EPSS 0.00142 · Published 2026-06-23 · Partial fix CWE-1284
Priority LOW 18
Libgcrypt before 1.12.2 mishandles Dilithium signing.
CVSS 3.1MEDIUM 4.0· Local · No auth · No interaction · EPSS 0.00229 · Published 2026-04-23 · Partial fix · 1.12.2 CWE-787
Priority LOW 29
Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.
CVSS 3.1MEDIUM 6.7· Local · No auth · No interaction · EPSS 0.00182 · Published 2026-04-23 · Fixed in 1.10.4, 1.11.3 +1 CWE-787
Priority LOW 25
In GnuPG before 2.5.17, a long signature packet length causes parse_signature to return success with sig->data[] set to a NULL value, leading to a denial of service (application crash).
CVSS 3.1MEDIUM 5.5· Local · Low privileges · No interaction · EPSS 0.00486 · Published 2026-01-27 · Partial fix · 2.5.17 CWE-476
Priority LOW 39
In GnuPG before 2.5.17, a stack-based buffer overflow exists in tpm2daemon during handling of the PKDECRYPT command for TPM-backed RSA and ECC keys.
CVSS 3.1HIGH 8.4· Local · No auth · No interaction · EPSS 0.00438 · Published 2026-01-27 · Fixed in 2.5.17 CWE-121
Priority MEDIUM 46
In GnuPG before 2.5.17, a crafted CMS (S/MIME) EnvelopedData message carrying an oversized wrapped session key can cause a stack-based buffer overflow in gpg-agent during PKDECRYPT--kem=CMS handling.
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.01813 · Published 2026-01-27 · Partial fix · 2.5.17 CWE-121
Priority HIGH 69
In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input.
CVSS 3.1HIGH 7.8· Local · No auth · No interaction · EPSS 0.00152 · Published 2025-12-28 · Partial fix · 2.2.51, 2.4.9 CWE-675
Priority MEDIUM 60
In GnuPG through 2.4.8, if a signed message has \f at the end of a plaintext line, an adversary can construct a modified message that places additional text after the signed material, such that signature verification of…
CVSS 3.1MEDIUM 5.9· Local · No auth · No interaction · EPSS 0.00113 · Published 2025-12-27 · Partial fix CWE-347
Priority LOW 21
In GnuPG before 2.5.5, if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags, the user loses the ability to verify signatures made from ce…
CVSS 3.1MEDIUM 4.7· Local · Low privileges · No interaction · EPSS 0.00194 · Published 2025-03-19 · Partial fix · 2.5.5 CWE-754
Priority LOW 16
GnuPG can be made to spin on a relatively small input by (for example) crafting a public key with thousands of signatures attached, compressed down to just a few KB.
CVSS 3.1LOW 3.3· Local · Low privileges · No interaction · EPSS 0.00293 · Published 2023-02-23 · No fix listed CWE-787
Priority HIGH 82
A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser.
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.01703 · Published 2023-01-12 · Partial fix CWE-190
Priority MEDIUM 45
Libksba before 1.6.3 is prone to an integer overflow vulnerability in the CRL signature parser.
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.01674 · Published 2022-12-20 · Partial fix CWE-190
Priority LOW 34
GnuPG through 2.3.6, in unusual situations where an attacker possesses any secret-key information from a victim's keyring and other constraints (e.g., use of GPGME) are met, allows signature forgery via injection into th…
CVSS 3.1MEDIUM 6.5· Network · No auth · No interaction · EPSS 0.02844 · Published 2022-07-01 · Partial fix CWE-74
Priority LOW 29
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 publi…
CVSS 3.1MEDIUM 5.9· Network · No auth · No interaction · EPSS 0.01423 · Published 2021-09-06 · Partial fix CWE-327
Priority MEDIUM 43
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.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.0237 · Published 2021-06-08 · Partial fix CWE-325
Priority LOW 36
_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.
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.01064 · Published 2021-01-29 · No fix listed CWE-787
Priority LOW 37
GnuPG 2.2.21 and 2.2.22 (and Gpg4win 3.1.12) has an array overflow, leading to a crash or possibly unspecified other impact, when a victim imports an attacker's OpenPGP key, and this key has AEAD preferences.
CVSS 3.1HIGH 7.8· Local · No auth · User interaction · EPSS 0.01283 · Published 2020-09-03 · No fix listed CWE-120
Priority LOW 35
A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.01077 · Published 2020-03-20 · Will not fix CWE-326
Priority LOW 30
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 exponentiation,…
CVSS 3.1MEDIUM 5.9· Network · No auth · No interaction · EPSS 0.01952 · Published 2019-11-29 · Partial fix · 1.6.3, 1.4.19 CWE-203
Priority LOW 21
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 cr…
CVSS 3.1MEDIUM 4.2· Physical · No auth · No interaction · EPSS 0.006 · Published 2019-11-29 · Partial fix · 1.6.3, 1.4.19 CWE-200
Priority LOW 26
dirmngr before 2.1.0 improperly handles certain system calls, which allows remote attackers to cause a denial of service (DOS) via a specially-crafted certificate.
CVSS 3.1MEDIUM 5.3· Network · No auth · No interaction · EPSS 0.01203 · Published 2019-11-27 · No fix listed CWE-295
Priority LOW 30
kbx/keybox-search.c in GnuPG before 1.4.19, 2.0.x before 2.0.27, and 2.1.x before 2.1.2 does not properly handle bitwise left-shifts, which allows remote attackers to cause a denial of service (invalid read operation) vi…
CVSS 3.1MEDIUM 5.5· Local · No auth · User interaction · EPSS 0.02473 · Published 2019-11-20 · Will not fix CWE-20
Priority LOW 29
The keyring DB in GnuPG before 2.1.2 does not properly handle invalid packets, which allows remote attackers to cause a denial of service (invalid read and use-after-free) via a crafted keyring file.
CVSS 3.1MEDIUM 5.5· Local · No auth · User interaction · EPSS 0.01924 · Published 2019-11-20 · Will not fix CWE-416
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