What is CVE-2009-3046?

CVE-2009-3046 is a high-severity vulnerability in Opera Browser, classified under Improper Certificate Validation. CVSS score: 7.5/10. Published 2009-09-02.

How severe is CVE-2009-3046?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Opera Browser

CVE-2009-3046

Opera before 10.00 does not check all intermediate X.509 certificates for revocation, which makes it easier for remote SSL servers to bypass validation of the certificate chain via a revoked certificate.

Vulnerability class: Improper Certificate Validation

Published 2009-09-02 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.011 (64.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Opera Browser

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

www.opera.com/docs/changelogs/freebsd/1000/ (Broken Link, Vendor Advisory)
www.opera.com/support/kb/view/929/ (Broken Link, Vendor Advisory)
www.opera.com/docs/changelogs/solaris/1000/ (Broken Link, Vendor Advisory)
www.opera.com/docs/changelogs/linux/1000/ (Broken Link, Vendor Advisory)
www.opera.com/docs/changelogs/windows/1000/ (Broken Link, Vendor Advisory)
oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:6357 (Broken Link, signature, vdb-entry)
www.opera.com/docs/changelogs/mac/1000/ (Broken Link, Vendor Advisory)

Frequently asked questions

What is CVE-2009-3046?: CVE-2009-3046 is a high-severity vulnerability in Opera Browser, classified under Improper Certificate Validation. CVSS score: 7.5/10. Published 2009-09-02.
How severe is CVE-2009-3046?: High severity. CVSS v3 base score is 7.5 out of 10.