CVE-2026-45185

CVE-2026-45185 — Dead.Letter: Exim Heap UAF to Remote Root CVSS 9.8 Critical | Exim 4.97–4.99.2 | Ubuntu / GnuTLS builds | Unauthenticated Full write-up with GDB trace, step-by-step analysis, and global exposure data: https://0init.github.io/cve-2026-45185-dead-letter-exim-rce.html What is it...

Dead.Letter-CVE-2026-45185

CVE-2026-45185 — "Dead.Letter" Exim Vulnerability Scanner A shell script for detecting whether a Linux system is vulnerable to CVE-2026-45185, a use-after-free in the Exim mail transfer agent that can lead to remote code execution. Designed for use in CI/CD pipelines, configuration management...

cve-2026-45185-detection-script

CVE-2026-45185 Detection Scripts c SECPlayground Platform —https://www.secplayground.com These detection scripts are property of the SECPlayground Platform. Two safe detection scripts. Neither drives the closenotify-mid-BDAT trigger, so they will not crash the daemon or leave panic-log entries...

Astra Linux – vulnerability in exim4

In Exim versions prior to 4.99.3, under certain GnuTLS configurations, there is a remotely reachable use-after-free vulnerability in the BDAT body parsing path. It occurs when a client sends a TLS closenotify mid-body during a CHUNKING transfer, followed by a final cleartext byte on the same TCP...

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...

Exploit for CVE-2026-45185

CVE-2026-45185 Nuclei Template Validation Lab This repository...

The vulnerability was exploited in Exim.

The developers of Exim introduced a vulnerability in the Exim Mail Transfer Agent versions prior to 4.99.3. This vulnerability involves a use-after-free in the BDAT body parsing process, specifically when certain GnuTLS backend configurations are used. An unauthorized attacker can exploit this...

SUSE 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 client sends a TLS closenotify mid-body during a CHUNKING transfer, followed by a final cleartext byte on the same TCP connection. This can lead to...

Exim 4.99.2 Memory Corruption

A remotely reachable memory corruption issue was discovered in Exim's GnuTLS backend. The vulnerability is triggered during BDAT message body handling when a client sends a TLS closenotify alert before the body transfer is complete, and then follows up with a final byte in cleartext on the same T...

Exim BDAT/CHUNKING Code Execution

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...

EUVD-2026-29824

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 closenotify mid-body during a CHUNKING transfer, followed by a final cleartext byte on the same TCP connection. This can lead to...

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 client sends a TLS closenotify mid-body during a CHUNKING transfer, followed by a final cleartext byte on the same TCP connection. This can lead to...

UBUNTU-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 client sends a TLS closenotify mid-body during a CHUNKING transfer, followed by a final cleartext byte on the same TCP connection. This can lead to...

New Exim BDAT Vulnerability Exposes GnuTLS Builds to Potential Code Execution

Exim has released security updates to address a severe security issue affecting certain configurations that could enable memory corruption and potential code execution. Exim is an open-source Mail Transfer Agent MTA designed for Unix-like systems to receive, route, and deliver email. The...

USN-8270-1 exim4 vulnerability

It was discovered that Exim incorrectly handled BDAT body parsing. A remote attacker could use this issue to cause Exim to crash, resulting in a denial of service, or possibly execute arbitrary code...

CVE-2026-45185: Use After Free

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 closenotify mid-body during a CHUNKING transfer, followed by a final cleartext byte on the same TCP connection. This can lead to...

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 client sends a TLS closenotify mid-body during a CHUNKING transfer, followed by a final cleartext byte on the same TCP connection. This can lead to...

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 client sends a TLS closenotify mid-body during a CHUNKING transfer, followed by a final cleartext byte on the same TCP connection. This can lead to...

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 client sends a TLS closenotify mid-body during a CHUNKING transfer, followed by a final cleartext byte on the same TCP connection. This can lead to...