Vendor
Exim vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 14 vulnerabilities in Exim: 4 in the last 7 days and 6 in the last 90 days, 6 of them critical and 5 exploited in the wild. The most recent, CVE-2026-94057, was published on 19 September 2026. 1 technology has a page of its own.
- Last 7 days
- 4
- Last 90 days
- 6
- Critical, all time
- 6
- Exploited in the wild
- 5
About Exim
Exim is an open-source project maintaining a widely-used message transfer agent for Unix-like operating systems.
Exim technologies
- Exim14
Latest Exim vulnerabilities
- CVE-2026-94057: Exim before 4.100.1 allows SMTP smuggling in which the received message does not match any sent message, and instead…mediumCVSS 4EPSS 0.2%
- CVE-2026-94056: Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain…highCVSS 7.5EPSS 0.4%
- CVE-2026-94055: Exim before 4.100.1, when certain non-default TLS settings are used with GnuTLS, has a use-after-free.lowCVSS 3.7EPSS 0.3%
- CVE-2026-94054: Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write.highCVSS 7EPSS 0.3%
- CVE-2026-66141: Exim privilege escalation in .forward pipe transport force_commandhighCVSS 7.4
- CVE-2026-66140: Exim directory traversal in queue-name argumentshighCVSS 8.4
- CVE-2026-48840: Exim stack memory disclosure in PROXY protocol handlingmediumCVSS 5.3
- CVE-2026-45185: Exim use-after-free in BDAT body parsing with GnuTLScriticalCVSS 9.8EPSS 0.1%
- CVE-2010-4344: Exim Heap-Based Buffer Overflow Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-2010-4345: Exim Privilege Escalation Vulnerabilitycriticalexploited in the wildCVSS 7.8
- CVE-2019-16928: Exim Out-of-bounds Write Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-2019-10149: Exim Mail Transfer Agent (MTA) Improper Input Validationcriticalexploited in the wildCVSS 9.8
- CVE-2018-6789: Exim Buffer Overflow Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-1999-0971: Exim buffer overflow in .forward file processinghighCVSS 7.2
Most severe Exim vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2010-4344: Exim Heap-Based Buffer Overflow Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-2019-16928: Exim Out-of-bounds Write Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-2019-10149: Exim Mail Transfer Agent (MTA) Improper Input Validationcriticalexploited in the wildCVSS 9.8
- CVE-2018-6789: Exim Buffer Overflow Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-2010-4345: Exim Privilege Escalation Vulnerabilitycriticalexploited in the wildCVSS 7.8
- CVE-2026-45185: Exim use-after-free in BDAT body parsing with GnuTLScriticalCVSS 9.8EPSS 0.1%
- CVE-2026-66140: Exim directory traversal in queue-name argumentshighCVSS 8.4
- CVE-2026-94056: Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain…highCVSS 7.5EPSS 0.4%
- CVE-2026-66141: Exim privilege escalation in .forward pipe transport force_commandhighCVSS 7.4
- CVE-1999-0971: Exim buffer overflow in .forward file processinghighCVSS 7.2
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 | 2 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 4 | 0 | |
| 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/vendors/exim.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, "Exim vulnerabilities", https://junglewise.ai/threats/vendors/exim, 26 September 2026.