Technology · Mozilla
Mozilla Thunderbird-Esr vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 66 vulnerabilities in Mozilla Thunderbird-Esr: 0 in the last 7 days and 37 in the last 90 days, 24 of them critical and 2 exploited in the wild. The most recent, CVE-2026-92079, was published on 15 September 2026.
- Last 7 days
- 0
- Last 90 days
- 37
- Critical, all time
- 24
- Exploited in the wild
- 2
About Mozilla Thunderbird-Esr
An Extended Support Release version of the open-source email client designed for organizations requiring long-term stability.
Latest Mozilla Thunderbird-Esr vulnerabilities
- CVE-2026-92079: Mozilla Firefox mitigation bypass in Widget: Win32criticalCVSS 9.1EPSS 0.5%
- CVE-2026-92067: Mozilla Firefox use-after-free in Widget: Gtk componenthighCVSS 8.8EPSS 0.5%
- CVE-2026-92060: Mozilla Firefox use-after-free in Internationalization componenthighCVSS 8.8EPSS 0.5%
- CVE-2026-92058: Mozilla Firefox use-after-free in Graphics componenthighCVSS 8.8EPSS 0.5%
- CVE-2026-92057: Mozilla Firefox mitigation bypass in Enterprise Policies componentcriticalCVSS 9.1EPSS 0.5%
- CVE-2026-92056: Mozilla Firefox use-after-free in Graphics Text componenthighCVSS 8.8EPSS 0.5%
- CVE-2026-92055: Mozilla Firefox privilege escalation in DevTools componenthighCVSS 8.8EPSS 0.4%
- CVE-2026-92054: Mozilla Firefox privilege escalation in Memory componenthighCVSS 8.8EPSS 0.5%
- CVE-2026-92048: Mozilla Firefox sandbox escape in Widget: Win32 componentcriticalCVSS 9EPSS 0.4%
- CVE-2026-92047: Mozilla Firefox privilege escalation in Crash ReportinghighCVSS 8.8EPSS 0.4%
- CVE-2026-92043: Mozilla Firefox privilege escalation in Audio/Video componenthighCVSS 8.8EPSS 0.5%
- CVE-2026-92031: Mozilla Firefox information disclosure in ImageLibmediumCVSS 6.5EPSS 0.3%
- CVE-2026-92016: Mozilla Firefox use-after-free in Disability Access APIshighCVSS 8.8EPSS 0.3%
- CVE-2026-92015: Mozilla Firefox privilege escalation in WebExtensionshighCVSS 8.8EPSS 0.3%
- CVE-2026-84145: Mozilla Thunderbird memory corruption and security defectshighCVSS 7.5EPSS 0.4%
- CVE-2026-84144: Mozilla Thunderbird memory corruption in browser enginehighCVSS 7.5EPSS 0.4%
- CVE-2026-84141: Mozilla Firefox integer overflow in Graphics: ImageLibcriticalCVSS 9.8EPSS 0.6%
- CVE-2026-84140: Mozilla Firefox site isolation issue in DOM Navigation componentcriticalCVSS 9.8EPSS 0.3%
- CVE-2026-84139: Mozilla Firefox clickjacking issue in DOM EventsmediumCVSS 6.1EPSS 0.3%
- CVE-2026-84134: Mozilla Firefox other issue in Profile Backup componentcriticalCVSS 9.8EPSS 0.6%
- CVE-2026-84132: Mozilla Firefox information disclosure in HTTP networkinghighCVSS 7.5EPSS 0.4%
- CVE-2026-84125: Mozilla Firefox use-after-free in DOM Core & HTMLmediumCVSS 5.4EPSS 0.3%
- CVE-2026-84124: Mozilla Firefox use-after-free in DOM Core & HTMLmediumCVSS 5.4EPSS 0.2%
- CVE-2026-84123: Mozilla Firefox use-after-free in WebGPU graphics componenthighCVSS 8.8EPSS 0.4%
- CVE-2026-84118: Mozilla Firefox use-after-free in JavaScript GCmediumCVSS 5.4EPSS 0.3%
Most severe Mozilla Thunderbird-Esr vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2013-1690: Mozilla Firefox and Thunderbird Denial-of-Service Vulnerabilitycriticalexploited in the wildCVSS 8.8
- CVE-2013-1675: Mozilla Firefox Information Disclosure Vulnerabilitycriticalexploited in the wildCVSS 6.5
- CVE-2026-75874: Mozilla Firefox Remote Settings Client sandbox escapecriticalCVSS 10EPSS 0.5%
- CVE-2026-4688: Mozilla Firefox and Thunderbird sandbox escape in Disability Access APIscriticalCVSS 10EPSS 0.4%
- CVE-2026-2768: Mozilla Firefox and Thunderbird sandbox escape in IndexedDBcriticalCVSS 10EPSS 0.4%
- CVE-2026-74964: Mozilla Firefox integer overflow in Graphics componentcriticalCVSS 9.8EPSS 0.7%
- CVE-2026-84141: Mozilla Firefox integer overflow in Graphics: ImageLibcriticalCVSS 9.8EPSS 0.6%
- CVE-2026-74988: Mozilla Thunderbird memory corruption in ESR 153.0 and 153criticalCVSS 9.8EPSS 0.6%
- CVE-2026-84134: Mozilla Firefox other issue in Profile Backup componentcriticalCVSS 9.8EPSS 0.6%
- CVE-2026-74985: Mozilla Firefox privilege escalation in Enterprise PoliciescriticalCVSS 9.8EPSS 0.5%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 12 | 4 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 11 | 3 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 14 | 3 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/thunderbird-esr.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Mozilla Thunderbird-Esr vulnerabilities", https://junglewise.ai/threats/technologies/thunderbird-esr, 26 September 2026.