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CVE-2026-24883

Good to know:

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Date: January 27, 2026

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).

Severity Score

Related Resources (4)

https://www.openwall.com/lists/oss-security/2026/01/27/8
https://nvd.nist.gov/vuln/detail/CVE-2026-24883
https://dev.gnupg.org/T8049
https://www.mend.io/vulnerability-database/CVE-2026-24883

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

Top Fix

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Upgrade Version

Upgrade to version https://github.com/gpg/gnupg.git - gnupg-2.5.17

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CVSS v3.1

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

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