CVE-2023-51764

CVE-2023-51764 CVE-2023-51764 poc Link: https://github.com/duy-31/CVE-2023-51764 1. Add SMTP authentication 2. The script has only been tested on Kali 3. Please do not use the script for illegal purposes...

CLSA-2026-1785509707 nginx: Fix of 6 CVEs

CVE-2025-53859: fix buffer over-read in the SMTP authentication path that could disclose worker process memory to the authentication server - CVE-2026-28753: validate host names resolved from the client address to prevent header injection into authhttp and XCLIENT requests - CVE-2026-40701: fix...

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : Exim vulnerability (USN-8353-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-8353-1 advisory. Warisjeet Singh discovered that Exim with SUPPORTPROXY enabled did not properly handle memory before SMTP authentication. A remote...

TencentOS Server 4: nginx (TSSA-2026:0279)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:0279 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...

nginx: NGINX ngx_mail_smtp_module vulnerability

A memory access flaw has been discovered in nginx. The ngxmailsmtpmodule might allow an unauthenticated attacker to over-read NGINX SMTP authentication process memory. As a result, the server side may leak arbitrary bytes sent in a request to the authentication server. This issue occurs during th...

Unity Linux 20.1070e Security Update: fetchmail (UTSA-2026-006182)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006182 advisory. In fetchmail before 6.5.6, the SMTP client can crash when authenticating upon receiving a 334 status code in a malformed context. Tenable has extracted the preceding...

BIT-NGINX-GATEWAY-2025-53859 NGINX ngx_mail_smtp_module vulnerability

NGINX Open Source and NGINX Plus have a vulnerability in the ngxmailsmtpmodule that might allow an unauthenticated attacker to over-read NGINX SMTP authentication process memory; as a result, the server side may leak arbitrary bytes sent in a request to the authentication server. This issue happe...

OESA-2025-2424 fetchmail security update

Fetchmail is a remote mail retrieval and forwarding utility intended for use over on-demand TCP/IP links, like SLIP or PPP connections. Fetchmail supports every remote-mail protocol currently in use on the Internet POP2, POP3, RPOP, APOP, KPOP, all IMAPs, ESMTP ETRN, IPv6, and IPSEC for retrieval...

Updated fetchmail package fixes security vulnerability

It was discovered that fetchmail's SMTP client, when configured to authenticate, is susceptible to a protocol violation where, when a trusted but malicious or malfunctioning SMTP server responds to an authentication request with a "334" code but without a following blank on the line, it will...

EUVD-2005-1783

Malware in sbrugna...

EUVD-2017-6517

Malware in sbrugna...

CVE-2025-61962

In fetchmail before 6.5.6, the SMTP client can crash when authenticating upon receiving a 334 status code in a malformed context...

EUVD-2021-9916

Malicious code in bioql PyPI...

SUSE SLES15 / openSUSE 15 Security Update : nginx (SUSE-SU-2025:03444-1)

The remote SUSE Linux SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:03444-1 advisory. - CVE-2025-53859:?the server side may leak arbitrary bytes during the NGINX SMTP authentication process bsc1248070. ...

fetchmail -- potential crash when authenticating to SMTP server

Matthias Andree reports: fetchmail's SMTP client, when configured to authenticate, is susceptible to a protocol violation where, when a trusted but malicious or malfunctioning SMTP server responds to an authentication request with a "334" code but without a following blank on the line, it will...

SUSE-SU-2025:03243-1 Security update for nginx

This update for nginx fixes the following issues: - CVE-2025-53859: the server side may leak arbitrary bytes during the NGINX SMTP authentication process bsc1248070. - CVE-2025-23419: session resumption can bypass client certificate authentication requirements using TLSv1.3 bsc1236851...

OESA-2025-2136 nginx security update

NGINX is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. Security Fixes: NGINX Open Source and NGINX Plus have a vulnerability in the ngxmailsmtpmodule that might allow an unauthenticated attacker to over-read NGINX SMTP authentication...

SUSE-SU-2025:03089-1 Security update for nginx

This update for nginx fixes the following issues: - CVE-2025-53859: the server side may leak arbitrary bytes during the NGINX SMTP authentication process bsc1248070. - CVE-2025-23419: session resumption can bypass client certificate authentication requirements using TLSv1.3 bsc1236851...

Linux Distros Unpatched Vulnerability : CVE-2025-53859

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NGINX Open Source and NGINX Plus have a vulnerability in the ngxmailsmtpmodule that might allow an unauthenticated attacker to over-read NGINX SMTP authenticati...

OESA-2025-2089 nginx security update

NGINX is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. Security Fixes: NGINX Open Source and NGINX Plus have a vulnerability in the ngxmailsmtpmodule that might allow an unauthenticated attacker to over-read NGINX SMTP authentication...