Astra Linux – Vulnerability in exim4

Before version 4.97.1, Exim allowed SMTP smuggling in certain pipeline/chunking configurations. Remote attackers could use a known exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, thereby bypassing an SPF protection mechanism. This issue arises because Exim...

Astra Linux – Vulnerability in exim4

Exim before version 4.95 has a heap-based buffer overflow for the alias list in hostnamelookup in host.c when senderhostname is set...

Astra Linux – Vulnerability in exim4

Exim 4 before 4.94.2 has an improper neutralization of line delimiters. Local users can alter the behavior of root processes because a recipient address may contain a newline character...

Astra Linux – Vulnerability in exim4

Exim 4 before 4.94.2 has an improper restriction on write operations within the bounds of a memory buffer. This occurs when processing name=value pairs within MAIL FROM and RCPT TO commands...

Astra Linux – Vulnerability in exim4

Exim 4 before 4.94.2 allowed Buffer Underwrite, which could allow unauthenticated remote attackers to execute arbitrary commands. This is because smtpungetc was only intended for pushing back characters, but it can actually be used to push back non-character error codes, such as EOF...

Astra Linux – Vulnerability in exim4

Exim 4 before 4.94.2 has an improper neutralization of line delimiters, which is relevant in non-default configurations that enable Delivery Status Notification DSN. Certain uses of ORCPT= can cause a new line to be inserted into a spool header file, thereby indirectly allowing unauthenticated...

Astra Linux – Vulnerability in exim4

In Exim before 4.99.2, when utf8 operators are enabled, there is a potential for out-of-bounds reading if large UTF-8 trailing characters are present malformed UTF-8 header data. Information may be disclosed within an error message generated during the processing of an unrelated email message...

Astra Linux – Vulnerability in exim4

Exim 4 before 4.94.2 allowed out-of-bounds read vulnerabilities. The smtpsetupmsg function may disclose sensitive information from the process memory to an unauthenticated SMTP client...

Astra Linux – Vulnerability in exim4

Exim 4 before 4.94.2 allows Heap-based Buffer Overflows because it mishandles the "-F’.‘” syntax on the command line. This may allow privilege escalation from any user to root. This issue occurs due to the incorrect interpretation of negative sizes in the strncpy function...

Astra Linux – Vulnerability in exim4

Exim 4.98 before 4.98.1 allowed remote SQL injection when SQLite hints and ETRN serialization were used. Resolving SQL injection requires an update to 4.99.1 in certain non-default rate-limit configurations...

Astra Linux – Vulnerability in exim4

Exim 4 before 4.94.2 allows Out-of-bounds Read because pdkimfinishbodyhash does not validate the relationship between sig-bodyhash.len and b-bh.len; thus, a crafted DKIM-Signature header might lead to the leakage of sensitive information from process memory...

Astra Linux – Vulnerability in exim4

Exim 4 before 4.94.2 allowed integer overflow to lead to a buffer overflow in the receiveaddrecipient function, through an email message with fifty million recipients. NOTE: Remote exploitation might be difficult due to resource consumption...

Astra Linux – Vulnerability in exim4

Exim 4 before 4.94.2 has an improper initialization issue that can lead to recursive stack consumption or other consequences. This occurs because the use of certain getc functions is handled incorrectly when a client uses BDAT instead of DATA...

Astra Linux – Vulnerability in exim4

Exim 4 before 4.94.2 allowed execution with unnecessary privileges. Since Exim operates as root in the log directory which is owned by a non-root user, a symlink or hard link attack could allow overwriting of critical root-owned files anywhere in the filesystem...

Astra Linux – Vulnerability in exim4

A vulnerability was discovered in Exim and has been classified as problematic. This issue affects certain aspects of the component Regex Handler’s processing. The vulnerability results in memory leaks after the component is freed from memory. The name of the patch is...

Astra Linux – Vulnerability in exim4

Exim 4 before 4.94.2 allowed a heap-based buffer overflow in the queuerun function, through two sender options: -R and -S. This could lead to privilege escalation from the exim user to the root user...

Exploit for Use After Free in Exim

CVE-2026-45185 — Dead.Letter: Exim Heap UAF to Remote Root...

ROS-20260729-73-0034

The vulnerability of the ungetc function in the BDAT/CHUNKING component of the email server Exim relates to the use of memory after it is freed. Exploiting this vulnerability could allow a remote attacker to execute arbitrary code...

CVE-2026-66140

A flaw was found in Exim. This vulnerability allows an attacker to perform directory traversal by mishandling arguments related to queue-name. This could enable unauthorized access to files outside of the designated spool area, potentially leading to a gain of privileges. Mitigation Mitigation fo...

Linux Distros Unpatched Vulnerability : CVE-2026-66140

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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-na...