VulnerabilityModified
CVE-2020-26971
Certain blit values provided by the user were not properly constrained leading to a heap buffer overflow on some video drivers.
HIGH 8.8EPSS 1.88%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.88%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Certain blit values provided by the user were not properly constrained leading to a heap buffer overflow on some video drivers. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.88% probability · 78th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- mozilla/firefox · mozilla/firefox esr · mozilla/thunderbird
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1663466Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-54/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-55/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-56/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1663466Permissions Required, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-54/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-55/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-56/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.