CVE-2012-0475
Mozilla Firefox 4.x through 11.0, Thunderbird 5.0 through 11.0, and SeaMonkey before 2.9 do not properly construct the Origin and…
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Mozilla Firefox 4.x through 11.0, Thunderbird 5.0 through 11.0, and SeaMonkey before 2.9 do not properly construct the Origin and Sec-WebSocket-Origin HTTP headers, which might allow remote attackers to bypass an IPv6 literal ACL via a cross-site (1) XMLHttpRequest or (2) WebSocket operation involving a nonstandard port number and an IPv6 address that contains certain zero fields.
Timeline
ID reserved
By mitre
- 4 months later
· 4 months later
Published
- 12 years later
· 12 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Low2.6 | AV:N/AC:H/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 1.9% · top 20% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.6.
Weakness
Affected products
n/a
- affected n/a
References (8)
- firefox-websocket-sec-bypass(75153) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- oval:org.mitre.oval:def:16279 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=694576 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 49055 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 53230 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 48972 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 49047 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://www.mozilla.org/security/announce/2012/mfsa2012-28.html (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
[](https://cveledger.app/cve/CVE-2012-0475)Record last updated .