Exim
by Exim
Source repositories
CVEs (77)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2026-66140 | Hig | 0.55 | 8.4 | 0.00 | Jul 24, 2026 | Exim before 4.99.5 allows directory traversal to access files outside of the spool area, and consequently gain privileges, because arguments related to queue-name are mishandled. | ||
| CVE-2020-8015 | Hig | 0.55 | 8.4 | 0.01 | Apr 2, 2020 | A UNIX Symbolic Link (Symlink) Following vulnerability in the packaging of exim in openSUSE Factory allows local attackers to escalate from user mail to root. This issue affects: openSUSE Factory exim versions prior to 4.93.0.4-3.1. | ||
| CVE-2020-28019 | Hig | 0.54 | 7.5 | 0.62 | May 6, 2021 | Exim 4 before 4.94.2 has Improper Initialization that can lead to recursion-based stack consumption or other consequences. This occurs because use of certain getc functions is mishandled when a client uses BDAT instead of DATA. | ||
| CVE-2025-30232 | Hig | 0.53 | 8.1 | 0.01 | Mar 28, 2025 | A use-after-free in Exim 4.96 through 4.98.1 could allow users (with command-line access) to escalate privileges. | ||
| CVE-2020-28016 | Hig | 0.51 | 7.8 | 0.00 | May 6, 2021 | Exim 4 before 4.94.2 allows an off-by-two Out-of-bounds Write because "-F ''" is mishandled by parse_fix_phrase. | ||
| CVE-2020-28015 | Hig | 0.51 | 7.8 | 0.00 | May 6, 2021 | Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters. Local users can alter the behavior of root processes because a recipient address can have a newline character. | ||
| CVE-2020-28013 | Hig | 0.51 | 7.8 | 0.00 | May 6, 2021 | Exim 4 before 4.94.2 allows Heap-based Buffer Overflow because it mishandles "-F '.('" on the command line, and thus may allow privilege escalation from any user to root. This occurs because of the interpretation of negative sizes in strncpy. | ||
| CVE-2020-28012 | Hig | 0.51 | 7.8 | 0.00 | May 6, 2021 | Exim 4 before 4.94.2 allows Exposure of File Descriptor to Unintended Control Sphere because rda_interpret uses a privileged pipe that lacks a close-on-exec flag. | ||
| CVE-2020-28011 | Hig | 0.51 | 7.8 | 0.00 | May 6, 2021 | 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 to root. | ||
| CVE-2020-28010 | Hig | 0.51 | 7.8 | 0.00 | May 6, 2021 | 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 buffer that is too small (on some common platforms). | ||
| CVE-2020-28009 | Hig | 0.51 | 7.8 | 0.00 | May 6, 2021 | Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow because get_stdinput allows unbounded reads that are accompanied by unbounded increases in a certain size variable. NOTE: exploitation may be impractical because of the execution time needed to overflow (multiple… | ||
| CVE-2020-28008 | Hig | 0.51 | 7.8 | 0.00 | May 6, 2021 | 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), an attacker can write to a /var/spool/exim4/input spool header file, in which a crafted recipient address can indirectly lead to… | ||
| CVE-2020-28007 | Hig | 0.51 | 7.8 | 0.01 | May 6, 2021 | 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 symlink or hard link attack allows overwriting critical root-owned files anywhere on the filesystem. | ||
| CVE-2021-38371 | Hig | 0.49 | 7.5 | 0.02 | Aug 10, 2021 | The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending. | ||
| CVE-2020-28025 | Hig | 0.49 | 7.5 | 0.03 | May 6, 2021 | Exim 4 before 4.94.2 allows Out-of-bounds Read because pdkim_finish_bodyhash does not validate the relationship between sig->bodyhash.len and b->bh.len; thus, a crafted DKIM-Signature header might lead to a leak of sensitive information from process memory. | ||
| CVE-2020-28023 | Hig | 0.49 | 7.5 | 0.03 | May 6, 2021 | Exim 4 before 4.94.2 allows Out-of-bounds Read. smtp_setup_msg may disclose sensitive information from process memory to an unauthenticated SMTP client. | ||
| CVE-2020-12783 | Hig | 0.49 | 7.5 | 0.05 | May 11, 2020 | Exim through 4.93 has an out-of-bounds read in the SPA authenticator that could result in SPA/NTLM authentication bypass in auths/spa.c and auths/auth-spa.c. | ||
| CVE-2016-1531 | Hig | 0.49 | 7.0 | 0.06 | Apr 7, 2016 | Exim before 4.86.2, when installed setuid root, allows local users to gain privileges via the perl_startup argument. | ||
| CVE-2026-66141 | Hig | 0.48 | 7.4 | 0.00 | Jul 24, 2026 | Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandled. | ||
| CVE-2025-53881 | Med | 0.45 | — | 0.00 | Oct 2, 2025 | A UNIX Symbolic Link (Symlink) Following vulnerability in logrotate config in the exim package allowed privilege escalation from mail user/group to root.This issue affects Tumbleweed: from ? before 4.98.2-lp156.248.1. |
- risk 0.55cvss 8.4epss 0.00
Exim before 4.99.5 allows directory traversal to access files outside of the spool area, and consequently gain privileges, because arguments related to queue-name are mishandled.
- risk 0.55cvss 8.4epss 0.01
A UNIX Symbolic Link (Symlink) Following vulnerability in the packaging of exim in openSUSE Factory allows local attackers to escalate from user mail to root. This issue affects: openSUSE Factory exim versions prior to 4.93.0.4-3.1.
- risk 0.54cvss 7.5epss 0.62
Exim 4 before 4.94.2 has Improper Initialization that can lead to recursion-based stack consumption or other consequences. This occurs because use of certain getc functions is mishandled when a client uses BDAT instead of DATA.
- risk 0.53cvss 8.1epss 0.01
A use-after-free in Exim 4.96 through 4.98.1 could allow users (with command-line access) to escalate privileges.
- risk 0.51cvss 7.8epss 0.00
Exim 4 before 4.94.2 allows an off-by-two Out-of-bounds Write because "-F ''" is mishandled by parse_fix_phrase.
- risk 0.51cvss 7.8epss 0.00
Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters. Local users can alter the behavior of root processes because a recipient address can have a newline character.
- risk 0.51cvss 7.8epss 0.00
Exim 4 before 4.94.2 allows Heap-based Buffer Overflow because it mishandles "-F '.('" on the command line, and thus may allow privilege escalation from any user to root. This occurs because of the interpretation of negative sizes in strncpy.
- risk 0.51cvss 7.8epss 0.00
Exim 4 before 4.94.2 allows Exposure of File Descriptor to Unintended Control Sphere because rda_interpret uses a privileged pipe that lacks a close-on-exec flag.
- risk 0.51cvss 7.8epss 0.00
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 to root.
- risk 0.51cvss 7.8epss 0.00
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 buffer that is too small (on some common platforms).
- risk 0.51cvss 7.8epss 0.00
Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow because get_stdinput allows unbounded reads that are accompanied by unbounded increases in a certain size variable. NOTE: exploitation may be impractical because of the execution time needed to overflow (multiple…
- risk 0.51cvss 7.8epss 0.00
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), an attacker can write to a /var/spool/exim4/input spool header file, in which a crafted recipient address can indirectly lead to…
- risk 0.51cvss 7.8epss 0.01
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 symlink or hard link attack allows overwriting critical root-owned files anywhere on the filesystem.
- risk 0.49cvss 7.5epss 0.02
The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.
- risk 0.49cvss 7.5epss 0.03
Exim 4 before 4.94.2 allows Out-of-bounds Read because pdkim_finish_bodyhash does not validate the relationship between sig->bodyhash.len and b->bh.len; thus, a crafted DKIM-Signature header might lead to a leak of sensitive information from process memory.
- risk 0.49cvss 7.5epss 0.03
Exim 4 before 4.94.2 allows Out-of-bounds Read. smtp_setup_msg may disclose sensitive information from process memory to an unauthenticated SMTP client.
- risk 0.49cvss 7.5epss 0.05
Exim through 4.93 has an out-of-bounds read in the SPA authenticator that could result in SPA/NTLM authentication bypass in auths/spa.c and auths/auth-spa.c.
- risk 0.49cvss 7.0epss 0.06
Exim before 4.86.2, when installed setuid root, allows local users to gain privileges via the perl_startup argument.
- risk 0.48cvss 7.4epss 0.00
Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandled.
- risk 0.45cvss —epss 0.00
A UNIX Symbolic Link (Symlink) Following vulnerability in logrotate config in the exim package allowed privilege escalation from mail user/group to root.This issue affects Tumbleweed: from ? before 4.98.2-lp156.248.1.
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