CVE-2022-0566: mozilla thunderbird Out-of-bounds Write
CVSS: 8.8v3.1HighModified
AliasesMGASA-2022-0072UBUNTU-CVE-2022-0566DEBIAN-CVE-2022-0566DLA-2930-1DSA-5086-1openSUSE-SU-2024:11856-1
Published 22-12-2022Last modified 16-04-2025
Vulnerability summary
CVE-2022-0566 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in mozilla thunderbird. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 52.5% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
0.71%
0%100%
Low · +0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 8 · Related 3Timeline
- 22-12-2022PublishedVulnerability first disclosed.
- 16-04-2025Last modifiedVulnerability information updated.
Description
It may be possible for an attacker to craft an email message that causes Thunderbird to perform an out-of-bounds write of one byte when processing the message. This vulnerability affects Thunderbird < 91.6.1.
CVSS metrics
4 scores · 4 sources · 1 versionHigh 8.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.71%
Chance of exploitation in the next 30 days
Percentile
53%
Versus all other CVEs
30-day change
+0.01 pp
From 0.70% on 18-09-2026
18-09-202618-10-2026
EPSS score0.71%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Mageia2 products
- thunderbird< 91.6.1-1.mga8
- thunderbird-l10n< 91.6.1-1.mga8
Debian1 product
- thunderbird< 1:91.6.1-1~deb10u1 | < 1:91.6.1-1~deb11u1 | < 1:91.6.1-1~deb9u1 | < 1:91.6.1-1
Mozilla1 product
- thunderbird≥ unspecified, < 91.6.1 | < 91.6.1
Opensuse1 product
- MozillaThunderbird&distro=openSUSE Tumbleweed< 91.6.1-1.1
Ubuntu1 product
- thunderbird< 1:91.7.0+build2-0ubuntu0.18.04.1 | < 1:91.7.0+build2-0ubuntu0.20.04.1 | < 1:91.6.1+build1-0ubuntu1
5 vendors · 6 products
References
12 links- www.mozilla.org/security/advisories/mfsa2022-07/Vendor Advisory
