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CVE-2006-2940

OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier versions allows attackers to cause a denial of service (CPU consumption) via…

Description

OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier versions allows attackers to cause a denial of service (CPU consumption) via parasitic public keys with large (1) "public exponent" or (2) "public modulus" values in X.509 certificates that require extra time to process when using RSA signature verification.

Timeline

  1. ID reserved

    By redhat

  2. · 4 months later

    Published

  3. · 18 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-2006-2940, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified2.0High7.8AV:N/AC:L/Au:N/C:N/I:N/A:C
EPSS (exploitation in 30 days)
5.1% · top 7.6% of all CVEs (10 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Affected products

  • n/a

    • affected n/a

References

140

Sources

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

Badge for a README or a ticket

CVE-2006-2940 badge
[![CVE-2006-2940](https://cveledger.app/badge/CVE-2006-2940.svg)](https://cveledger.app/cve/CVE-2006-2940)

Record last updated .