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CVE-2025-68973

Good to know:

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Date: December 28, 2025

In GnuPG through 2.4.8, 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.

Severity Score

Related Resources (10)

https://gpg.fail/memcpy
https://media.ccc.de/v/39c3-to-sign-or-not-to-sign-practical-vulnerabilities-i
https://nvd.nist.gov/vuln/detail/CVE-2025-68973
http://www.openwall.com/lists/oss-security/2025/12/29/11
https://github.com/gpg/gnupg/compare/gnupg-2.2.50...gnupg-2.2.51
https://www.openwall.com/lists/oss-security/2025/12/28/5
https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/armor.c#L1305-L1306
https://github.com/gpg/gnupg/commit/115d138ba599328005c5321c0ef9f00355838ca9
https://news.ycombinator.com/item?id=46403200
https://www.mend.io/vulnerability-database/CVE-2025-68973

Severity Score

Weakness Type (CWE)

Multiple Operations on Resource in Single-Operation Context

CWE-675

Top Fix

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Upgrade to version https://github.com/gpg/gnupg.git - gnupg-2.5.14

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

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