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CVE-2020-12422
In non-standard configurations, a JPEG image created by JavaScript could have caused an internal variable to overflow, resulting in an out…
High8.8EPSS 1.9%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
In non-standard configurations, a JPEG image created by JavaScript could have caused an internal variable to overflow, resulting in an out of bounds write, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 78.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.9% · top 20% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Weakness
- Integer overflow in nsJPEGEncoder::emptyOutputBuffer
- CWE-787 (opens in a new tab)All about CWE-787 and its CVEs
Affected products
References (5)
- https://www.mozilla.org/security/advisories/mfsa2020-24/ (opens in a new tab)x_refsource_MISCx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=1450353 (opens in a new tab)x_refsource_MISCx_transferred
- openSUSE-SU-2020:0983 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2020:1017 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- GLSA-202007-10 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_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-2020-12422)Record last updated .