High severity · published Sep 3, 2020
CVE-2020-25125
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…
7.8
CVSS
1.3%
EPSS
No
On KEV
Description
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. The overflow is caused by a g10/key-check.c error. NOTE: GnuPG 2.3.x is unaffected. GnuPG 2.2.23 is a fixed version.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 70% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GN
Gnupg · Gnupg
2.2.21; 2.2.22 · source: NVD
GP
Gpg4win · Gpg4win
3.1.12 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-25125
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-25125
Mailing List
http://www.openwall.com/lists/oss-security/2020/09/03/4
Mailing List
http://www.openwall.com/lists/oss-security/2020/09/03/5
Exploit
https://bugzilla.opensuse.org/show_bug.cgi?id=1176034
Mailing List
https://dev.gnupg.org/T5050
Patch
https://dev.gnupg.org/rG8ec9573e57866dda5efb4677d4454161517484bc
Vendor Advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2020q3/000448.html
More from Gnupg
9.8
CVE-2026-24881
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…
9.8
CVE-2022-3515
A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser
8.8
CVE-2018-1000858
GnuPG version 2.1.12 - 2.2.11 contains a Cross ite Request Forgery (CSRF) vulnerability in dirmngr that can result in Attacker controlled CSRF, Information Disclosure, DoS
8.1
CVE-2010-2547
Use-after-free vulnerability in kbx/keybox-blob.c in GPGSM in GnuPG 2.x through 2.0.16 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary…
7.8
CVE-2026-24882
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