CVE-2017-17689

MediumCVSS 5.9/10Last modified Jun 17, 2026

Description

The S/MIME specification allows a Cipher Block Chaining (CBC) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL.

Metrics

CVSS 3.0 5.9/10CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected software

No affected versions have been published.

Timeline

Published: May 16, 2018
Last modified: Jun 17, 2026
NVD status: Modified

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