CVE-2020-25125

Name: CVE-2020-25125
Creator: NVD / NIST
Published: 2020-09-03T18:15:15.16+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.28%

Last modified Jun 17, 2026

CVE-2020-25125 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 1.28% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

1.28%

66.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Gnupg	Gnupg	2.2.21
Gnupg	Gnupg	2.2.22
Gpg4win	Gpg4win	3.1.12

References

http://www.openwall.com/lists/oss-security/2020/09/03/4Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/09/03/5Mailing List, Third Party Advisory
https://bugzilla.opensuse.org/show_bug.cgi?id=1176034Exploit, Issue Tracking, Third Party Advisory
https://dev.gnupg.org/T5050Mailing List
https://dev.gnupg.org/rG8ec9573e57866dda5efb4677d4454161517484bcPatch, Vendor Advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2020q3/000448.htmlVendor Advisory
http://www.openwall.com/lists/oss-security/2020/09/03/4Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/09/03/5Mailing List, Third Party Advisory
https://bugzilla.opensuse.org/show_bug.cgi?id=1176034Exploit, Issue Tracking, Third Party Advisory
https://dev.gnupg.org/T5050Mailing List
https://dev.gnupg.org/rG8ec9573e57866dda5efb4677d4454161517484bcPatch, Vendor Advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2020q3/000448.htmlVendor Advisory

Timeline

Published: Sep 3, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25125?

How severe is CVE-2020-25125?

CVE-2020-25125 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.28% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25125?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-25125?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST