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CVE-2006-4340

Mozilla Network Security Service (NSS) library before 3.11.3, as used in Mozilla Firefox before 1.5.0.7, Thunderbird before 1.5.0.7, and…

Description

Mozilla Network Security Service (NSS) library before 3.11.3, as used in Mozilla Firefox before 1.5.0.7, Thunderbird before 1.5.0.7, and SeaMonkey before 1.0.5, when using an RSA key with exponent 3, does not properly handle extra data in a signature, which allows remote attackers to forge signatures for SSL/TLS and email certificates, a similar vulnerability to CVE-2006-4339. NOTE: on 20061107, Mozilla released an advisory stating that these versions were not completely patched by MFSA2006-60. The newer fixes for 1.5.0.7 are covered by CVE-2006-5462.

Timeline

  1. ID reserved

    By redhat

  2. · 22 days 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-2006-4340, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified2.0Medium4.0AV:N/AC:H/Au:N/C:P/I:P/A:N
EPSS (exploitation in 30 days)
2.3% · top 16% of all CVEs (11 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.0.

Affected products

  • n/a

    • affected n/a

References

References72

Sources

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

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Record last updated .