Vulnerabilities (CVE)

Filtered by vendor Exim Subscribe
Total 63 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2023-42119 1 Exim 1 Exim 2025-11-03 N/A 3.1 LOW
Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of Exim. Authentication is not required to exploit this vulnerability. The specific flaw exists within the smtp service, which listens on TCP port 25 by default. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the service account. . Was ZDI-CAN-17643.
CVE-2023-42117 1 Exim 1 Exim 2025-11-03 N/A 9.8 CRITICAL
Exim Improper Neutralization of Special Elements Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Exim. Authentication is not required to exploit this vulnerability. The specific flaw exists within the smtp service, which listens on TCP port 25 by default. The issue results from the lack of proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-17554.
CVE-2022-3559 2 Exim, Fedoraproject 2 Exim, Fedora 2025-11-03 N/A 4.6 MEDIUM
A vulnerability was found in Exim and classified as problematic. This issue affects some unknown processing of the component Regex Handler. The manipulation leads to use after free. The name of the patch is 4e9ed49f8f12eb331b29bd5b6dc3693c520fddc2. It is recommended to apply a patch to fix this issue. The identifier VDB-211073 was assigned to this vulnerability.
CVE-2021-38371 1 Exim 1 Exim 2025-11-03 5.0 MEDIUM 7.5 HIGH
The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.
CVE-2025-30232 1 Exim 1 Exim 2025-09-30 N/A 8.1 HIGH
A use-after-free in Exim 4.96 through 4.98.1 could allow users (with command-line access) to escalate privileges.
CVE-2023-42118 2 Exim, Libspf2 Project 2 Exim, Libspf2 2025-08-07 N/A 8.8 HIGH
Exim libspf2 Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Exim libspf2. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of SPF macros. When parsing SPF macros, the process does not properly validate user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the service account. . Was ZDI-CAN-17578.
CVE-2023-42115 1 Exim 1 Exim 2025-08-07 N/A 9.8 CRITICAL
Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Exim. Authentication is not required to exploit this vulnerability. The specific flaw exists within the smtp service, which listens on TCP port 25 by default. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of a buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. . Was ZDI-CAN-17434.
CVE-2024-39929 1 Exim 1 Exim 2025-07-10 N/A 5.4 MEDIUM
Exim through 4.97.1 misparses a multiline RFC 2231 header filename, and thus remote attackers can bypass a $mime_filename extension-blocking protection mechanism, and potentially deliver executable attachments to the mailboxes of end users.
CVE-2022-3620 2 Exim, Fedoraproject 2 Exim, Fedora 2025-05-23 N/A 5.6 MEDIUM
A vulnerability was found in Exim and classified as problematic. This issue affects the function dmarc_dns_lookup of the file dmarc.c of the component DMARC Handler. The manipulation leads to use after free. The attack may be initiated remotely. The name of the patch is 12fb3842f81bcbd4a4519d5728f2d7e0e3ca1445. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211919.
CVE-2017-16943 2 Debian, Exim 2 Debian Linux, Exim 2025-04-20 7.5 HIGH 9.8 CRITICAL
The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via vectors involving BDAT commands.
CVE-2017-16944 2 Debian, Exim 2 Debian Linux, Exim 2025-04-20 5.0 MEDIUM 7.5 HIGH
The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to cause a denial of service (infinite loop and stack exhaustion) via vectors involving BDAT commands and an improper check for a '.' character signifying the end of the content, related to the bdat_getc function.
CVE-2017-1000369 2 Debian, Exim 2 Debian Linux, Exim 2025-04-20 2.1 LOW 4.0 MEDIUM
Exim supports the use of multiple "-p" command line arguments which are malloc()'ed and never free()'ed, used in conjunction with other issues allows attackers to cause arbitrary code execution. This affects exim version 4.89 and earlier. Please note that at this time upstream has released a patch (commit 65e061b76867a9ea7aeeb535341b790b90ae6c21), but it is not known if a new point release is available that addresses this issue at this time.
CVE-2016-9963 3 Canonical, Debian, Exim 3 Ubuntu Linux, Debian Linux, Exim 2025-04-20 2.6 LOW 5.9 MEDIUM
Exim before 4.87.1 might allow remote attackers to obtain the private DKIM signing key via vectors related to log files and bounce messages.
CVE-2014-2972 1 Exim 1 Exim 2025-04-12 4.6 MEDIUM N/A
expand.c in Exim before 4.83 expands mathematical comparisons twice, which allows local users to gain privileges and execute arbitrary commands via a crafted lookup value.
CVE-2014-2957 1 Exim 1 Exim 2025-04-12 6.8 MEDIUM N/A
The dmarc_process function in dmarc.c in Exim before 4.82.1, when EXPERIMENTAL_DMARC is enabled, allows remote attackers to execute arbitrary code via the From header in an email, which is passed to the expand_string function.
CVE-2016-1531 1 Exim 1 Exim 2025-04-12 6.9 MEDIUM 7.0 HIGH
Exim before 4.86.2, when installed setuid root, allows local users to gain privileges via the perl_startup argument.
CVE-2022-37452 2 Debian, Exim 2 Debian Linux, Exim 2024-11-21 N/A 9.8 CRITICAL
Exim before 4.95 has a heap-based buffer overflow for the alias list in host_name_lookup in host.c when sender_host_name is set.
CVE-2022-37451 2 Exim, Fedoraproject 2 Exim, Fedora 2024-11-21 N/A 7.5 HIGH
Exim before 4.96 has an invalid free in pam_converse in auths/call_pam.c because store_free is not used after store_malloc.
CVE-2021-27216 1 Exim 1 Exim 2024-11-21 6.3 MEDIUM 6.3 MEDIUM
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 files as root. This involves the -oP and -oPX options.
CVE-2020-8015 2 Exim, Opensuse 2 Exim, Opensuse 2024-11-21 7.2 HIGH 8.4 HIGH
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.