CVE-2026-27651

When the ngxmailauthhttpmodule module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when 1 CRAM-MD5 or APOP authentication is enabled, and 2 the authentication server permits retry by returning the Auth-Wait...

CVE-2026-27651 NGINX ngx_mail_auth_http_module vulnerability

When the ngxmailauthhttpmodule module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when 1 CRAM-MD5 or APOP authentication is enabled, and 2 the authentication server permits retry by returning the Auth-Wait...

CVE-2026-27651

When the ngxmailauthhttpmodule module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when 1 CRAM-MD5 or APOP authentication is enabled, and 2 the authentication server permits retry by returning the Auth-Wait...

CVE-2026-27651 NGINX ngx_mail_auth_http_module vulnerability

When the ngxmailauthhttpmodule module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when 1 CRAM-MD5 or APOP authentication is enabled, and 2 the authentication server permits retry by returning the Auth-Wait...

CVE-2026-27651

CVE-2026-27651 affects the ngx_mail_auth_http_module in NGINX Plus and NGINX Open Source. When CRAM-MD5 or APOP authentication is enabled and the authentication server indicates a retry by returning the Auth-Wait header, undisclosed requests can cause worker processes to terminate. This is the st...

CVE-2026-28753

CVE-2026-28753 affects NGINX Plus and NGINX Open Source through the ngx_mail_smtp_module. The vulnerability arises from improper handling of CRLF sequences in DNS responses, which could allow an attacker-controlled DNS server to inject arbitrary headers into SMTP upstream requests, enabling poten...

CVE-2026-28753 NGINX ngx_mail_proxy_module vulnerability

NGINX Plus and NGINX Open Source have a vulnerability in the ngxmailsmtpmodule module due to the improper handling of CRLF sequences in DNS responses. This allows an attacker-controlled DNS server to inject arbitrary headers into SMTP upstream requests, leading to potential request manipulation...

K000160336: Out-of-band Security Notification (March 24, 2026)

Security Advisory Description On March 24, 2026, F5 announced the following security issues. This document is intended to serve as an overview of these vulnerabilities to help determine the impact to your F5 devices. You can find the details of each issue in the associated articles. High CVEs...

K000160367: NGINX ngx_mail_smtp_module vulnerability CVE-2026-28753

Security Advisory Description NGINX Plus and NGINX Open Source have a vulnerability in the ngxmailsmtpmodule module due to the improper handling of CRLF sequences in DNS responses. This allows an attacker-controlled DNS server to inject arbitrary headers into SMTP upstream requests, leading to...

EUVD-2019-20031

Tabs Mail Carrier 2.5.1 contains a buffer overflow vulnerability in the MAIL FROM SMTP command that allows remote attackers to execute arbitrary code by sending a crafted MAIL FROM parameter. Attackers can connect to the SMTP service on port 25 and send a malicious MAIL FROM command with an...

CVE-2019-25646

Tabs Mail Carrier 2.5.1 contains a buffer overflow vulnerability in the MAIL FROM SMTP command that allows remote attackers to execute arbitrary code by sending a crafted MAIL FROM parameter. Attackers can connect to the SMTP service on port 25 and send a malicious MAIL FROM command with an...

CVE-2019-25646 Tabs Mail Carrier 2.5.1 Buffer Overflow via MAIL FROM

Tabs Mail Carrier 2.5.1 contains a buffer overflow vulnerability in the MAIL FROM SMTP command that allows remote attackers to execute arbitrary code by sending a crafted MAIL FROM parameter. Attackers can connect to the SMTP service on port 25 and send a malicious MAIL FROM command with an...

CVE-2019-25646

Tabs Mail Carrier 2.5.1 contains a buffer overflow vulnerability in the MAIL FROM SMTP command that allows remote attackers to execute arbitrary code by sending a crafted MAIL FROM parameter. Attackers can connect to the SMTP service on port 25 and send a malicious MAIL FROM command with an...

CVE-2019-25646 Tabs Mail Carrier 2.5.1 Buffer Overflow via MAIL FROM

Tabs Mail Carrier 2.5.1 contains a buffer overflow vulnerability in the MAIL FROM SMTP command that allows remote attackers to execute arbitrary code by sending a crafted MAIL FROM parameter. Attackers can connect to the SMTP service on port 25 and send a malicious MAIL FROM command with an...

CVE-2019-25646

Tabs Mail Carrier 2.5.1 contains a buffer overflow in the MAIL FROM SMTP command that allows remote code execution by sending a crafted MAIL FROM parameter. An attacker can connect to the SMTP service on port 25 and send an oversized MAIL FROM to overwrite the EIP and execute a bind shell payload...

CVE-2019-25631

Affected product: AIDA64 Business 5.99.4900. Vulnerability: Structured exception handling (SEH) buffer overflow that allows local code execution by overwriting SEH pointers with shellcode. Trigger vectors include injecting egg hunter shellcode via the SMTP display name field in preferences or the...

PT-2026-27517

Name of the Vulnerable Software and Affected Versions Thunderbird versions prior to 149 Thunderbird versions prior to 140.9 Description A specially crafted email could contain malformed strings with negative lengths, leading to a memory read outside of the intended buffer. Successful exploitation...

Security Vulnerabilities fixed in Thunderbird 140.9 — Mozilla

A malicious mail server could send malformed strings with negative lengths, causing the parser to read memory outside the buffer. If a mail server or connection to a mail server were compromised, an attacker could cause the parser to malfunction, potentially crashing Thunderbird or leaking...

Security Vulnerabilities fixed in Thunderbird 149 — Mozilla

A malicious mail server could send malformed strings with negative lengths, causing the parser to read memory outside the buffer. If a mail server or connection to a mail server were compromised, an attacker could cause the parser to malfunction, potentially crashing Thunderbird or leaking...

Mozilla Thunderbird < 149.0

The version of Thunderbird installed on the remote Windows host is prior to 149.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-23 advisory. - Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability affects Firefox 149 a...