Vulnerability Database · Ubuntu · Package report
thunderbird: vulnerability history, versions and safety
thunderbird is a package in the Ubuntu ecosystem. Vulert records 21 vulnerabilities for it across 38 releases, from Mar 2023 to Jul 2025. Each vulnerability names the versions it affects, the fixed version to move to, and a workaround where no fix has been published.
No patched version yet — these are the ones to plan around.
See the unfixed vulnerabilities →No published version shipped hostile code.
Vulert verdict on thunderbird i
Updated on 23 Oct 2026
Careful: 6 of the 21 vulnerabilities Vulert records for this package have no fix yet. Plan around those, or apply the workaround listed for each. The rest have a fixed version to move to.
What to do: Plan around the 6 vulnerabilities with no published fix: each lists the affected range and any workaround that reduces exposure. No fix yet: Vulert alerts you the moment one is published. Monitor it with Vulert →
- Vulnerabilities on record 21 over 2 years · 0 in the last year i
- Latest disclosure 22 Jul 2025 i
- Highest CVSS 8.1 i
- With no published fix 6 i
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01 Versions
Which versions are affected
Every version Vulert holds for thunderbird, newest first, with the vulnerabilities that name it. A version with a count of zero has no recorded vulnerabilities; open a version to see the vulnerabilities it is exposed to.
Newest 38 of 38 versions on record. Severity counts are the vulnerabilities recorded against that exact release.
02 Disclosure history
How often vulnerabilities are recorded
Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 0 of the 21 were recorded in the last 12 months.
Other ways into the data
03 Vulnerabilities
Recorded vulnerabilities for thunderbird
| Vulnerability | Severity | Fixed version ↓ | Disclosed ↓ |
|---|---|---|---|
| Critical Memory Safety Vulnerability in Thunderbird: CVE-2025-5269 | 8.1 high | 1:128.12.0+build1-0ubuntu0.22.04.1 | 27 May 2025 |
| Critical Memory Safety Vulnerability in Thunderbird - CVE-2025-4093 | 8.1 high | 1:128.12.0+build1-0ubuntu0.22.04.1 | 29 Apr 2025 |
| Critical Out of Bounds Write Vulnerability in Thunderbird Package | 7.8 high | 1:128.12.0+build1-0ubuntu0.22.04.1 | 03 Jan 2025 |
| Sender Spoofing Vulnerability in Thunderbird: CVE-2025-3875 | 7.5 high | 1:128.12.0+build1-0ubuntu0.22.04.1 | 14 May 2025 |
| OpenPGP Message Misrepresentation Vulnerability in Thunderbird - CVE-2025-26696 | 7.0 high | 1:128.12.0+build1-0ubuntu0.22.04.1 | 10 Mar 2025 |
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Updated: 23/Oct/2026 · Vulnerabilities in our DB: 524315
