CVE-2026-7322
published 2026-04-28CVE-2026-7322: 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…
PriorityP343high7.3CVSS 3.1
AVNACLPRNUINSUCLILAL
EPSS
0.32%
23.6th percentile
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.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 150.0.1 | Firefox 150.0.1 |
| mozilla | firefox | < 115.35.1 | 115.35.1 |
| mozilla | firefox | < 150.0.1 | 150.0.1 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 128.0 < 140.10.1 | 140.10.1 |
| mozilla | firefox_esr | < Firefox ESR 115.35.1 | Firefox ESR 115.35.1 |
| mozilla | firefox_esr | < Firefox ESR 140.10.1 | Firefox ESR 140.10.1 |
| mozilla | thunderbird | < Thunderbird 140.10.1 | Thunderbird 140.10.1 |
| mozilla | thunderbird | < Thunderbird 150.0.1 | Thunderbird 150.0.1 |
| mozilla | thunderbird | < 140.10.1 | 140.10.1 |
| mozilla | thunderbird | < 150.0.1 | 150.0.1 |
| mozilla | thunderbird | — | — |
| rhel10 | firefox-flatpak | — | — |
| rhel10 | thunderbird-flatpak | — | — |
CVSS provenance
nvdv3.17.3HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
vendor_redhat7.3HIGH
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VulDB
Mozilla Thunderbird up to 150.0.0 memory corruption
vuldb·2026-04-28·CVSS 7.3
CVE-2026-7322 [HIGH] Mozilla Thunderbird up to 150.0.0 memory corruption
A vulnerability classified as critical was found in Mozilla Thunderbird up to 150.0.0. The impacted element is an unknown function. The manipulation results in memory corruption.
This vulnerability is reported as CVE-2026-7322. The attack can be launched remotely. No exploit exists.
Upgrading the affected component is advised.
GHSA
GHSA-xhr8-9mw2-3mf4: Memory safety bugs present in Firefox ESR 115
ghsa_unreviewed·2026-04-28
CVE-2026-7322 [HIGH] CWE-119 GHSA-xhr8-9mw2-3mf4: Memory safety bugs present in Firefox ESR 115
Memory safety bugs present in Firefox ESR 115.35.0, Firefox ESR 140.10.0, Thunderbird ESR 140.10.0, Firefox 150.0.0 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, and Firefox ESR 115.35.1.
VulDB
Mozilla Firefox up to 150.0.0 memory corruption
vuldb·2026-04-28·CVSS 7.3
CVE-2026-7322 [HIGH] Mozilla Firefox up to 150.0.0 memory corruption
A vulnerability classified as critical has been found in Mozilla Firefox up to 150.0.0. The affected element is an unknown function. The manipulation leads to memory corruption.
This vulnerability is documented as CVE-2026-7322. The attack can be initiated remotely. There is not any exploit available.
It is recommended to upgrade the affected component.
Red Hat
firefox: thunderbird: Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1
vendor_redhat·2026-04-28·CVSS 7.3
CVE-2026-7322 [HIGH] CWE-787 firefox: thunderbird: Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1
firefox: thunderbird: Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
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.
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: rhel10/thunderbird-flatpak (Red Hat Enterprise Linux 10) - Affected
Pac
Mozilla
Mozilla Foundation Security Advisory 2026-39: CVE-2026-7322
vendor_mozilla·CVSS 7.3
CVE-2026-7322 [HIGH] Mozilla Foundation Security Advisory 2026-39: CVE-2026-7322
Mozilla Foundation Security Advisory 2026-39
CVE: CVE-2026-7322
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 140.10.1
Mozilla
Mozilla Foundation Security Advisory 2026-38: CVE-2026-7322
vendor_mozilla·CVSS 7.3
CVE-2026-7322 [HIGH] Mozilla Foundation Security Advisory 2026-38: CVE-2026-7322
Mozilla Foundation Security Advisory 2026-38
CVE: CVE-2026-7322
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 150.0.1
Mozilla
Mozilla Foundation Security Advisory 2026-35: CVE-2026-7322
vendor_mozilla
CVE-2026-7322 Mozilla Foundation Security Advisory 2026-35: CVE-2026-7322
Mozilla Foundation Security Advisory 2026-35
CVE: CVE-2026-7322
Product: Firefox
Impact: high
Fixed in: Firefox 150.0.1
Mozilla
Mozilla Foundation Security Advisory 2026-37: CVE-2026-7322
vendor_mozilla
CVE-2026-7322 Mozilla Foundation Security Advisory 2026-37: CVE-2026-7322
Mozilla Foundation Security Advisory 2026-37
CVE: CVE-2026-7322
Product: Firefox ESR
Impact: critical
Fixed in: Firefox ESR 115.35.1
Mozilla
Mozilla Foundation Security Advisory 2026-36: CVE-2026-7322
vendor_mozilla
CVE-2026-7322 Mozilla Foundation Security Advisory 2026-36: CVE-2026-7322
Mozilla Foundation Security Advisory 2026-36
CVE: CVE-2026-7322
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 140.10.1
No detection rules found.
No public exploits indexed.
Hackernews
⚡ Weekly Recap: AI-Powered Phishing, Android Spying Tool, Linux Exploit, GitHub RCE & More
blogs_hackernews·2026-05-04·CVSS 9.3
CVE-2026-41940 [CRITICAL] ⚡ Weekly Recap: AI-Powered Phishing, Android Spying Tool, Linux Exploit, GitHub RCE & More
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## ⚡ Weekly Recap: AI-Powered Phishing, Android Spying Tool, Linux Exploit, GitHub RCE & More
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Bugzilla
CVE-2026-7322 firefox: thunderbird: Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1
bugzilla·2026-04-28·CVSS 7.3
CVE-2026-7322 [HIGH] CVE-2026-7322 firefox: thunderbird: Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1
CVE-2026-7322 firefox: thunderbird: Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1
Memory safety bugs present in Firefox ESR 115.35.0, Firefox ESR 140.10.0, Thunderbird ESR 140.10.0, Firefox 150.0.0 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, and Firefox ESR 115.35.1.
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%2C2032040https://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://access.redhat.com/errata/RHSA-2026:19153https://access.redhat.com/errata/RHSA-2026:19157https://access.redhat.com/errata/RHSA-2026:19348https://access.redhat.com/errata/RHSA-2026:19370https://access.redhat.com/errata/RHSA-2026:19588https://access.redhat.com/errata/RHSA-2026:20586https://access.redhat.com/errata/RHSA-2026:21743https://access.redhat.com/errata/RHSA-2026:22324https://access.redhat.com/errata/RHSA-2026:22408https://access.redhat.com/errata/RHSA-2026:22409https://access.redhat.com/errata/RHSA-2026:22410https://access.redhat.com/errata/RHSA-2026:22708https://access.redhat.com/errata/RHSA-2026:22712https://access.redhat.com/errata/RHSA-2026:22847https://access.redhat.com/errata/RHSA-2026:24345https://access.redhat.com/errata/RHSA-2026:24717https://access.redhat.com/errata/RHSA-2026:24718https://access.redhat.com/errata/RHSA-2026:24719https://access.redhat.com/errata/RHSA-2026:24721https://access.redhat.com/errata/RHSA-2026:24844https://access.redhat.com/errata/RHSA-2026:24846https://access.redhat.com/errata/RHSA-2026:25014https://access.redhat.com/security/cve/CVE-2026-7322https://bugzilla.redhat.com/show_bug.cgi?id=2463484https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7322.json
2026-04-28
Published