CVE-2026-57062

Published: Jun 23, 2026Updated: Jun 25, 2026 Sources: CVE List NVDCWE-1284

2.9LOW

NVD MITRE

Description

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. NOTE: this is related to CVE-2026-34182.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:LAttack Vector

Local

AC:HAttack Complexity

High

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-1284

Affected Products

GnuPG

oss-projectaka libgcrypt, libksba

GnuPGLibraryLibrary

Security Products / pki-crypto

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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References

https://blog.calif.io/p/how-to-format-a-ciphertext

blog.calif.io

https://www.gnupg.org/download/

gnupg.org

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