CVE-2020-26950
thunderbird - security update
8.8
HIGH
CVSS 3.1
EPSS 48.3%
Description
In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.
How to fix CVE-2020-26950
To remediate CVE-2020-26950, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 78.4.1esr-1 or later
- —upgrade to 78.4.1esr-1~deb9u1 or later
- —upgrade to 78.4.1esr-1~deb10u1 or later
- —upgrade to 1:78.4.2-1 or later
- —upgrade to 1:78.4.2-1~deb9u1 or later
- —upgrade to 1:78.4.2-1~deb10u1 or later
Is CVE-2020-26950 being exploited?
Moderate — EPSS is 48.3%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (6)
- from 0, < 78.4.1esr-1
- from 0, < 78.4.1esr-1~deb9u1
- from 0, < 78.4.1esr-1~deb10u1
- from 0, < 1:78.4.2-1
- from 0, < 1:78.4.2-1~deb9u1
- from 0, < 1:78.4.2-1~deb10u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |