Opera before 10.00 does not properly handle a (1) '\0' character or (2) invalid wildcard character in a domain name in the subject's…

Description

Opera before 10.00 does not properly handle a (1) '\0' character or (2) invalid wildcard character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.

Scores

EPSS (exploitation in 30 days)

1.0% · top 37% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.

Weakness

• n/a
• CWE-310 (opens in a new tab)All about CWE-310 and its CVEs

Affected products

• n/a

  • affected n/a

References (7)

• http://www.opera.com/docs/changelogs/freebsd/1000/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• oval:org.mitre.oval:def:6444 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• http://www.opera.com/docs/changelogs/solaris/1000/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.opera.com/docs/changelogs/linux/1000/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.opera.com/docs/changelogs/windows/1000/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.opera.com/support/kb/view/934/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.opera.com/docs/changelogs/mac/1000/ (opens in a new tab)x_refsource_CONFIRMx_transferred

Sources

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

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2009-3044](https://trackcve.app/badge/CVE-2009-3044.svg)](https://trackcve.app/cve/CVE-2009-3044)

Record last updated 7 Aug 2024, 06:14 UTC.