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CVE-2020-6800
Mozilla developers and community members reported memory safety bugs present in Firefox 72 and Firefox ESR 68.4. Some of these bugs showed…
High8.8EPSS 2.3%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
Mozilla developers and community members reported memory safety bugs present in Firefox 72 and Firefox ESR 68.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.
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)
- 2.3% · top 17% 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
- Memory safety bugs fixed in Thunderbird 68.5
- CWE-787 (opens in a new tab)All about CWE-787 and its CVEs
Affected products
- affected unspecified – < 68.5
- affected unspecified – < 73
- affected unspecified – < ESR68.5
References (9)
- https://www.mozilla.org/security/advisories/mfsa2020-05/ (opens in a new tab)x_refsource_MISCx_transferred
- https://www.mozilla.org/security/advisories/mfsa2020-06/ (opens in a new tab)x_refsource_MISCx_transferred
- https://www.mozilla.org/security/advisories/mfsa2020-07/ (opens in a new tab)x_refsource_MISCx_transferred
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1595786%2C1596706%2C1598543%2C1604851%2C1608580%2C1608785%2C1605777 (opens in a new tab)x_refsource_MISCx_transferred
- USN-4278-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- GLSA-202003-02 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- GLSA-202003-10 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- USN-4328-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- USN-4335-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_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-2020-6800)Record last updated .