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Microsoft Security Response CenterCVE-2026-57062

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.

Mariner

Read the vendor bulletin Get alerts for azl3 gnupg2 2.4.9-2 on Azure Linux
2.9CVSS out of 10Low severity
Scope

What the vendor says is affected

  • azl3 gnupg2 2.4.9-2 on Azure Linux 3.0
  • azl3 gnupg2 2.4.9-3 on Azure Linux 3.0

Versions the vendor lists as fixed

  • 2.4.9-3
Next step

What the vendor recommends

CBL-Mariner Releases

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-34182View CVSS, KEV, EPSS, and threat contextCVE-2026-57062View CVSS, KEV, EPSS, and threat context
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