CVE-2026-7322
Description
Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
AlmaLinux Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | thunderbird-140.10.1-1.el9_8.alma.1.x86_64.rpm |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 140.10.1esr-1~deb13u1 |
| sid | Fixed | 150.0.1-1 |
| forky | Fixed | 140.10.1esr-1 |
| bullseye | Fixed | 140.10.1esr-1~deb11u1 |
| bookworm | Fixed | 140.10.1esr-1~deb12u1 |
Red Hat Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | — |
| 8 | Fixed | — |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| mozilla | firefox | {"endExcluding":"115.35.1"} | 115.35.1 |
| mozilla | thunderbird | {"endExcluding":"140.10.1"} | 140.10.1 |
| mozilla | firefox | {"endExcluding":"115.35.1"} | 115.35.1 |
| mozilla | thunderbird | {"endExcluding":"140.10.1"} | 140.10.1 |
References
- https://access.redhat.com/errata/RHSA-2026:19348
- https://access.redhat.com/errata/RHSA-2026:19370
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=2021904%2C2022731%2C2027158%2C2027733%2C2027973%2C2027976%2C2028231%2C2028731%2C2028886%2C2029067%2C2029700%2C2029724%2C2029806%2C2029814%2C2030108%2C2030111%2C2031524%2C2031921%2C2032040
- https://www.mozilla.org/security/advisories/mfsa2026-35/
- https://www.mozilla.org/security/advisories/mfsa2026-36/
- https://www.mozilla.org/security/advisories/mfsa2026-37/
- https://www.mozilla.org/security/advisories/mfsa2026-38/
- https://www.mozilla.org/security/advisories/mfsa2026-39/
- https://security-tracker.debian.org/tracker/CVE-2026-7322
- https://bugzilla.redhat.com/2460074
- https://bugzilla.redhat.com/2460075
- https://bugzilla.redhat.com/2460076
- https://bugzilla.redhat.com/2460078
- https://bugzilla.redhat.com/2460079
- https://bugzilla.redhat.com/2460085
- https://bugzilla.redhat.com/2460086
- https://bugzilla.redhat.com/2460088
- https://bugzilla.redhat.com/2460092
- https://bugzilla.redhat.com/2460094
- https://bugzilla.redhat.com/2460095
- https://bugzilla.redhat.com/2460096
- https://bugzilla.redhat.com/2460097
- https://bugzilla.redhat.com/2460099
- https://bugzilla.redhat.com/2460101
- https://bugzilla.redhat.com/2460102
CWEs
CWE-119 CWE-416
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.