CVE-2022-2226: mozilla thunderbird Authentication Bypass by Capture-replay
Vulnerability summary
CVE-2022-2226 is a medium (CVSS 6.5) Authentication Bypass by Capture-replay vulnerability in mozilla thunderbird. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35.2% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 12 · Related 4Timeline
- 22-12-2022PublishedVulnerability first disclosed.
- 15-04-2025Last modifiedVulnerability information updated.
Description
An OpenPGP digital signature includes information about the date when the signature was created. When displaying an email that contains a digital signature, the email's date will be shown. If the dates were different, then Thunderbird didn't report the email as having an invalid signature. If an attacker performed a replay attack, in which an old email with old contents are resent at a later time, it could lead the victim to believe that the statements in the email are current. Fixed versions of Thunderbird will require that the signature's date roughly matches the displayed date of the email. This vulnerability affects Thunderbird < 102 and Thunderbird < 91.11.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS trend
Probability
0.42%
Chance of exploitation in the next 30 days
Percentile
35%
Versus all other CVEs
30-day change
+0.01 pp
From 0.41% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- thunderbird< 1:91.11.0-1
Mozilla1 product
- thunderbird≥ unspecified, < 102 | ≥ unspecified, < 91.11 | < 91.11 | 101.0
Ubuntu1 product
- thunderbird< 1:91.11.0+build2-0ubuntu0.18.04.1 | < 1:91.11.0+build2-0ubuntu0.20.04.1 | < 1:91.11.0+build2-0ubuntu0.22.04.1
3 vendors · 3 products
References
7 links- www.mozilla.org/security/advisories/mfsa2022-26/Vendor Advisory