CVE-2016-9064
Add-on updates failed to verify that the add-on ID inside the signed package matched the ID of the add-on being updated. An attacker who…
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
Add-on updates failed to verify that the add-on ID inside the signed package matched the ID of the add-on being updated. An attacker who could perform a man-in-the-middle attack on the user's connection to the update server and defeat the certificate pinning protection could provide a malicious signed add-on instead of a valid update. This vulnerability affects Firefox ESR < 45.5 and Firefox < 50.
Timeline
ID reserved
By mozilla
- 20 months later
· 20 months later
Published
- 6 years later
· 6 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 | 3.0 | Medium5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.99% · top 37% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.
Weakness
- Add-ons update must verify IDs match between current and new versions
- CWE-295 (opens in a new tab)All about CWE-295 and its CVEs
Affected products
- affected unspecified – < 45.5
- affected unspecified – < 50
References (7)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1303418 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1037298 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- GLSA-201701-15 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- 94336 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- RHSA-2016:2780 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://www.mozilla.org/security/advisories/mfsa2016-89/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.mozilla.org/security/advisories/mfsa2016-90/ (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-2016-9064)Record last updated .