Exim Security Vulnerabilities (CVEs)

Track 18 security vulnerabilities affecting Exim products and software. Get instant email alerts when new CVEs are discovered, automated security monitoring, and patch guidance.

7 Critical
10 High
1 Medium
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CVE-2025-67896 7.0

A heap-based buffer overflow vulnerability in Exim mail servers with certain non-default rate-limit configurations allows remote attackers to potentia...

Dec 14, 2025
CVE-2025-30232 8.1

A use-after-free vulnerability in Exim versions 4.96 through 4.98.1 allows users with command-line access to escalate privileges. This affects systems...

Mar 28, 2025
CVE-2025-26794 7.5

Exim mail servers running versions 4.98 before 4.98.1 with SQLite hints and ETRN serialization enabled are vulnerable to remote SQL injection attacks....

Feb 21, 2025
CVE-2024-39929 5.4

This vulnerability in Exim mail servers allows attackers to bypass filename extension filtering by using specially crafted multiline RFC 2231 headers....

Jul 4, 2024
CVE-2023-42115 9.8

CVE-2023-42115 is a critical out-of-bounds write vulnerability in Exim's SMTP service that allows unauthenticated remote attackers to execute arbitrar...

May 3, 2024
CVE-2023-42117 9.8

This is a critical remote code execution vulnerability in Exim mail servers that allows unauthenticated attackers to execute arbitrary code by sending...

May 3, 2024
CVE-2021-38371 7.5

This vulnerability in Exim's STARTTLS implementation allows attackers to inject malicious responses during SMTP communication by exploiting buffering ...

Aug 10, 2021
CVE-2020-28007 7.8

CVE-2020-28007 is a privilege escalation vulnerability in Exim mail servers where an attacker can create symbolic or hard links in the log directory t...

May 6, 2021
CVE-2020-28009 7.8

CVE-2020-28009 is an integer overflow vulnerability in Exim mail transfer agent versions before 4.94.2. It allows remote attackers to cause buffer ove...

May 6, 2021
CVE-2020-28011 7.8

CVE-2020-28011 is a heap-based buffer overflow vulnerability in Exim mail transfer agent versions before 4.94.2. Attackers can exploit this via the -R...

May 6, 2021
CVE-2020-28013 7.8

CVE-2020-28013 is a heap-based buffer overflow vulnerability in Exim mail transfer agent versions before 4.94.2. It allows local privilege escalation ...

May 6, 2021
CVE-2020-28015 7.8

CVE-2020-28015 is a vulnerability in Exim mail transfer agent where local users can inject newline characters into recipient addresses, potentially al...

May 6, 2021
CVE-2020-28017 9.8

CVE-2020-28017 is an integer overflow vulnerability in Exim mail transfer agent that can lead to buffer overflow when processing emails with an excess...

May 6, 2021
CVE-2020-28019 7.5

This vulnerability in Exim mail servers allows remote attackers to cause a denial of service through stack consumption via specially crafted BDAT comm...

May 6, 2021
CVE-2020-28020 9.8

CVE-2020-28020 is an integer overflow vulnerability in Exim mail transfer agent that leads to buffer overflow, allowing unauthenticated remote attacke...

May 6, 2021
CVE-2020-28022 9.8

CVE-2020-28022 is a critical heap-based buffer overflow vulnerability in Exim mail servers that allows remote attackers to execute arbitrary code by s...

May 6, 2021
CVE-2020-28024 9.8

CVE-2020-28024 is a critical buffer underwrite vulnerability in Exim mail servers that allows unauthenticated remote attackers to execute arbitrary co...

May 6, 2021
CVE-2020-28026 9.8

CVE-2020-28026 is a critical vulnerability in Exim mail servers that allows unauthenticated remote attackers to execute arbitrary commands as root whe...

May 6, 2021

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