Total
65 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2026-48840 | 1 Exim | 1 Exim | 2026-06-17 | N/A | 5.3 MEDIUM |
| Exim 4.88 before 4.99.4, in some proxy configurations, mishandles certain short payloads, leading to disclosure of uninitialized stack memory values to a client. | |||||
| CVE-2026-45185 | 1 Exim | 1 Exim | 2026-06-17 | N/A | 9.8 CRITICAL |
| 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 client sends a TLS close_notify mid-body during a CHUNKING transfer, followed by a final cleartext byte on the same TCP connection. This can lead to heap corruption. An unauthenticated network attacker exploiting this vulnerability could execute arbitrary code. | |||||
| CVE-2026-40687 | 1 Exim | 1 Exim | 2026-06-17 | N/A | 4.8 MEDIUM |
| 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 the connection instance, or erroneous data processing that divulges data from uninitialized heap memory. | |||||
| CVE-2026-40686 | 1 Exim | 1 Exim | 2026-06-17 | N/A | 3.7 LOW |
| 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-8 header data). Information might be divulged within an error message produced during handling of an unrelated e-mail message. | |||||
| CVE-2026-40685 | 1 Exim | 1 Exim | 2026-06-17 | N/A | 6.5 MEDIUM |
| 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 untrusted header, because of an incorrect implementation of \ skipping. | |||||
| CVE-2026-40684 | 1 Exim | 1 Exim | 2026-06-17 | N/A | 5.9 MEDIUM |
| 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 PTR records. This is caused by a dn_expand oddity in octal printing. | |||||
| CVE-2025-67896 | 1 Exim | 1 Exim | 2026-06-17 | N/A | 7.0 HIGH |
| Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer overflow because database records are cast directly to internal structures without validation. | |||||
| CVE-2025-30232 | 1 Exim | 1 Exim | 2026-06-17 | 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-2025-26794 | 1 Exim | 1 Exim | 2026-06-17 | N/A | 7.5 HIGH |
| 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 to 4.99.1 in certain non-default rate-limit configurations.) | |||||
| CVE-2024-39929 | 1 Exim | 1 Exim | 2026-06-17 | 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-2023-51766 | 3 Debian, Exim, Fedoraproject | 4 Debian Linux, Exim, Extra Packages For Enterprise Linux and 1 more | 2026-06-17 | N/A | 5.3 MEDIUM |
| Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Exim supports <LF>.<CR><LF> but some other popular e-mail servers do not. | |||||
| CVE-2023-42119 | 1 Exim | 1 Exim | 2026-06-17 | 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-2023-42118 | 2 Exim, Libspf2 Project | 2 Exim, Libspf2 | 2026-06-17 | 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-2023-42117 | 1 Exim | 1 Exim | 2026-06-17 | 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-2023-42116 | 1 Exim | 1 Exim | 2026-06-17 | N/A | 9.8 CRITICAL |
| Exim SMTP Challenge Stack-based Buffer Overflow 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 handling of NTLM challenge requests. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. . Was ZDI-CAN-17515. | |||||
| CVE-2023-42115 | 1 Exim | 1 Exim | 2026-06-17 | 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-2023-42114 | 1 Exim | 1 Exim | 2026-06-17 | N/A | 5.3 MEDIUM |
| Exim NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Exim. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of NTLM challenge requests. 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 data structure. An attacker can leverage this vulnerability to disclose information in the context of the service account. . Was ZDI-CAN-17433. | |||||
| CVE-2022-3620 | 2 Exim, Fedoraproject | 2 Exim, Fedora | 2026-06-17 | 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-2022-3559 | 2 Exim, Fedoraproject | 2 Exim, Fedora | 2026-06-17 | 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-2022-37452 | 2 Debian, Exim | 2 Debian Linux, Exim | 2026-06-17 | 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. | |||||