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CVE-2017-9526

In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can…

Medium5.9EPSS 2.3%
Published
Updated
Reserved
Assigned by
mitre

Description

In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.

Scores

CVSS scores of CVE-2017-9526, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.0Medium5.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS (exploitation in 30 days)
2.3% · top 17% of all CVEs (2 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.

Weakness

Affected products

  • n/a

    • affected n/a

References (7)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .