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CVE-2018-0737

Cache timing vulnerability in RSA Key Generation

Description

The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to a cache timing side channel attack. An attacker with sufficient access to mount cache timing attacks during the RSA key generation process could recover the private key. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2b-1.0.2o).

Timeline

  1. ID reserved

    By openssl

  2. · 5 months later

    Published

  3. · 9 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2018-0737, 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)
11.6% · top 3.9% of all CVEs (9 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

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

Affected products

  • OpenSSL · OpenSSL

    • affected Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h)
    • affected Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2b-1.0.2o)

References

34

Sources

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

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Record last updated .