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CVE-2012-1251
Opera before 9.63 does not properly verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers…
Medium5.8EPSS 0.59%
- Published
- Updated
- Reserved
- Assigned by
- jpcert
Description
Opera before 9.63 does not properly verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.8 | AV:N/AC:M/Au:N/C:P/I:P/A:N |
- EPSS (exploitation in 30 days)
- 0.59% · top 51% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.
Weakness
Affected products
n/a
- affected n/a
References (5)
- http://www.opera.com/docs/changelogs/mac/963/ (opens in a new tab)x_refsource_MISCx_transferred
- http://www.opera.com/docs/changelogs/windows/963/ (opens in a new tab)x_refsource_MISCx_transferred
- http://www.opera.com/docs/changelogs/unix/963/ (opens in a new tab)x_refsource_MISCx_transferred
- JVN#39707339 (opens in a new tab)third-party-advisoryx_refsource_JVNx_transferred
- JVNDB-2012-000049 (opens in a new tab)third-party-advisoryx_refsource_JVNDBx_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
[](https://trackcve.app/cve/CVE-2012-1251)Record last updated .