Vulnerability index

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Exim HIGH 7.8
CVE-2026-66140

Exim before 4.99.5 allows directory traversal to access files outside of the spool area, and consequently gain privileges, because arguments related …

Fix: 4.99.5+
Fix from $1,950 2026-07-24
Exim HIGH 7.8
CVE-2026-66141

Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandled.

Fix: 4.99.5+
Fix from $1,950 2026-07-24
Exim MEDIUM 5.3
CVE-2026-48840

Exim 4.88 before 4.99.4, in some proxy configurations, mishandles certain short payloads, leading to disclosure of uninitialized stack memory values …

Fix: 4.99.4+
Fix from $1,600 2026-05-30
Exim CRITICAL 9.8
CVE-2026-45185

Exim before 4.99.3, in certain GnuTLS configurations, has a remotely reachable use-after-free in the BDAT body parsing path. It is triggered when a c…

Fix: 4.99.3+
Fix from $2,300 2026-05-12
Exim CRITICAL 9.8
CVE-2026-40685

In Exim before 4.99.2, when JSON lookup is enabled, an out-of-bounds heap write can occur when a JSON operator encounters malformed JSON in an untrus…

Fix: 4.99.2+
Fix from $2,300 2026-04-30
Exim CRITICAL 9.1
CVE-2026-40687

In Exim before 4.99.2, when the SPA authentication driver is used with an adversarial SPA resource, there can be an out-of-bounds write that crashes …

Fix: 4.99.2+
Fix from $2,300 2026-04-30
Exim HIGH 7.5
CVE-2026-40684

In Exim before 4.99.2, on systems using musl libc (not glibc), an attacker can crash the connection instance when malformed DNS data is present in PT…

Fix: 4.99.2+
Fix from $1,950 2026-04-30
Exim MEDIUM 5.3
CVE-2026-40686

In Exim before 4.99.2, when utf8 operators are enabled, there is an out-of-bounds read if large UTF-8 trailing characters are present (malformed UTF-…

Fix: 4.99.2+
Fix from $1,600 2026-04-30
Exim CRITICAL 9.8
CVE-2025-67896

Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer overflow because database records are cast …

Fix: 4.99.1+
Fix from $2,300 2025-12-14
Exim HIGH 7.8
CVE-2025-30232

A use-after-free in Exim 4.96 through 4.98.1 could allow users (with command-line access) to escalate privileges.

Fix: after 4.98.1
Fix from $1,950 2025-03-28
Exim CRITICAL 9.8
CVE-2025-26794EPSS 77%

Exim 4.98 before 4.98.1, when SQLite hints and ETRN serialization are used, allows remote SQL injection. (Resolving SQL injection requires an update …

Fix: 4.98.1+
Fix from $2,300 2025-02-21
Exim MEDIUM 5.4
CVE-2024-39929EPSS 41%

Exim through 4.97.1 misparses a multiline RFC 2231 header filename, and thus remote attackers can bypass a $mime_filename extension-blocking protecti…

Fix: after 4.97.1
Fix from $1,600 2024-07-04
Exim CRITICAL 9.8
CVE-2023-42115EPSS 10%

Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected i…

Fix: 4.96.1+
Fix from $2,300 2024-05-03
Exim CRITICAL 9.8
CVE-2023-42116

Exim SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary …

Fix: 4.96.1+
Fix from $2,300 2024-05-03
Exim CRITICAL 9.8
CVE-2023-42117EPSS 6%

Exim Improper Neutralization of Special Elements Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary…

Fix: 4.96.2+
Fix from $2,300 2024-05-03
Exim MEDIUM 5.3
CVE-2023-42114EPSS 28%

Exim NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive informa…

Fix: 4.96.1+
Fix from $1,600 2024-05-03
Exim HIGH 7.5
CVE-2021-38371

The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.

Fix: after 4.94.2
Fix from $1,950 2021-08-10
Exim MEDIUM 6.3
CVE-2021-27216

Exim 4 before 4.94.2 has Execution with Unnecessary Privileges. By leveraging a delete_pid_file race condition, a local user can delete arbitrary fil…

Fix: 4.94.2+
Fix from $1,600 2021-05-06
Exim CRITICAL 9.8
CVE-2020-28017EPSS 37%

Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow in receive_add_recipient via an e-mail message with fifty million recipients. NOTE: r…

Fix: 4.94.1+
Fix from $2,300 2021-05-06
Exim CRITICAL 9.8
CVE-2020-28018EPSS 57%

Exim 4 before 4.94.2 allows Use After Free in smtp_reset in certain situations that may be common for builds with OpenSSL.

Fix: 4.94.2+
Fix from $2,300 2021-05-06
Exim CRITICAL 9.8
CVE-2020-28020EPSS 8%

Exim 4 before 4.92 allows Integer Overflow to Buffer Overflow, in which an unauthenticated remote attacker can execute arbitrary code by leveraging t…

Fix: 4.92+
Fix from $2,300 2021-05-06
Exim CRITICAL 9.8
CVE-2020-28022

Exim 4 before 4.94.2 has Improper Restriction of Write Operations within the Bounds of a Memory Buffer. This occurs when processing name=value pairs …

Fix: 4.94.2+
Fix from $2,300 2021-05-06
Exim CRITICAL 9.8
CVE-2020-28024

Exim 4 before 4.94.2 allows Buffer Underwrite that may result in unauthenticated remote attackers executing arbitrary commands, because smtp_ungetc w…

Fix: 4.94.2+
Fix from $2,300 2021-05-06
Exim CRITICAL 9.8
CVE-2020-28026EPSS 9%

Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters, relevant in non-default configurations that enable Delivery Status Notification …

Fix: 4.94.2+
Fix from $2,300 2021-05-06
Exim HIGH 8.8
CVE-2020-28021

Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters. An authenticated remote SMTP client can insert newline characters into a spool f…

Fix: 4.94.2+
Fix from $1,950 2021-05-06
Exim HIGH 7.8
CVE-2020-28007

Exim 4 before 4.94.2 allows Execution with Unnecessary Privileges. Because Exim operates as root in the log directory (owned by a non-root user), a s…

Fix: 4.94.2+
Fix from $1,950 2021-05-06
Exim HIGH 7.8
CVE-2020-28008

Exim 4 before 4.94.2 allows Execution with Unnecessary Privileges. Because Exim operates as root in the spool directory (owned by a non-root user), a…

Fix: 4.94.2+
Fix from $1,950 2021-05-06
Exim HIGH 7.8
CVE-2020-28009

Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow because get_stdinput allows unbounded reads that are accompanied by unbounded increas…

Fix: 4.94.2+
Fix from $1,950 2021-05-06
Exim HIGH 7.8
CVE-2020-28010

Exim 4 before 4.94.2 allows Out-of-bounds Write because the main function, while setuid root, copies the current working directory pathname into a bu…

Fix: 4.94.2+
Fix from $1,950 2021-05-06
Exim HIGH 7.8
CVE-2020-28011

Exim 4 before 4.94.2 allows Heap-based Buffer Overflow in queue_run via two sender options: -R and -S. This may cause privilege escalation from exim …

Fix: 4.94.2+
Fix from $1,950 2021-05-06