CVE-2026-84640

A maliciously constructed mail header could lead to a one byte read past the end of a buffer. This vulnerability was fixed in Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2...

CVE-2026-84640

CVE-2026-84640 is a one-byte buffer over-read in the mail header parser of Mozilla Thunderbird, triggered by a maliciously constructed mail header. The vulnerability is rated CVSS 3.1 7.5 (HIGH) with a vector of AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N , indicating a network-exploitable flaw requiring...

CVE-2026-84640 One byte overflow read in mail parser

A maliciously constructed mail header could lead to a one byte read past the end of a buffer. This vulnerability was fixed in Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2...

httpd: mod_proxy_ajp: heap-based buffer over-read due to missing null-termination check

A flaw was found in the modproxyajp module of httpd. When processing AJP Apache JServ Protocol messages, the server fails to properly check if a string is null-terminated before attempting to read it, allowing an attacker or a malformed request to cause a heap-based buffer over-read. This issue...

httpd: mod_proxy_ajp: heap-based buffer over-read and memory disclosure in ajp_parse_data()

A flaw was found in the modproxyajp module of httpd. When processing AJP Apache JServ Protocol messages, the ajpparsedata function attempts to read data beyond the allocated buffer size, allowing an attacker or a malformed request to cause a heap-based buffer over-read. This issue potentially lea...

httpd: Apache HTTP Server: Buffer Over-read via outbound OCSP requests to attacker-controlled server

A flaw was found in Apache HTTP Server. This buffer over-read vulnerability occurs when the server processes outbound Online Certificate Status Protocol OCSP requests directed to an attacker-controlled OCSP server. This could allow a remote attacker to read sensitive information from memory or...

RLSA-2026:61766 Moderate: glib2 security update

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures. Security Fixes: glib: buffer over-read in...

glib2 security update

An update is available for glib2. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list GLib provides the core application building blocks for libraries and applicatio...

MiracleLinux 9 : nginx:1.24 (AXSA:2026-1718:01)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1718:01 advisory. nginx: NGINX: Heap buffer over-read allows memory modification or denial of service CVE-2026-56434 nginx: NGINX: Memory disclosure and denial of...

Oracle Linux 8 : ELSA-2026-61766-0: / glib2 (ELSA-2026-617660)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-617660 advisory. - Fix CVE-2026-15588: limit D-Bus auth line read length - Fix CVE-2026-58010: off-by-one in GVariant tuple offset checking - Fix CVE-2026-58011: rang...

MiracleLinux 9 : nginx:1.26 (AXSA:2026-1722:01)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1722:01 advisory. nginx: NGINX: Heap buffer over-read allows memory modification or denial of service CVE-2026-56434 nginx: NGINX: Memory disclosure and denial of...

AlmaLinux 8 : glib2 (ALSA-2026:61766)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:61766 advisory. glib: buffer over-read in glib/gvariant-serialiser.c via gvstupleisnormal CVE-2026-58010 glib: out-of-bounds read in glib/gdatetime.c:gdatetimegetymd via...

Mozilla Thunderbird < 153.2

The version of Thunderbird installed on the remote Windows host is prior to 153.2. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-88 advisory. - Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155...

AlmaLinux 9 : nginx:1.26 (ALSA-2026:59496)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:59496 advisory. nginx: NGINX: Heap buffer over-read allows memory modification or denial of service CVE-2026-56434 nginx: NGINX: Memory disclosure and denial of service ...

Alibaba Cloud Linux 3 : 0268: glib2 (ALINUX3-SA-2026:0268)

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2026:0268 advisory. Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities: CVE-2026-15588: A denial-of-service and...

Security Vulnerabilities fixed in Thunderbird 155 — Mozilla

Triggering an error condition in certain MIME bodies would cause uninitialized memory to be used. A maliciously constructed mail header could lead to a one byte read past the end of a buffer. A malicious IMAP server can trigger use-after-free and heap-memory disclosure by sending a crafted ID...

RockyLinux 8 : glib2 (RLSA-2026:61766)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:61766 advisory. glib: buffer over-read in glib/gvariant-serialiser.c via gvstupleisnormal CVE-2026-58010 glib: out-of-bounds read in glib/gdatetime.c:gdatetimegetymd vi...

Mozilla Thunderbird < 140.15

The version of Thunderbird installed on the remote Windows host is prior to 140.15. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-87 advisory. - Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 15...

PT-2026-84526

Name of the Vulnerable Software and Affected Versions Thunderbird versions prior to 140.15 Thunderbird versions prior to 153.2 Thunderbird versions prior to 155 Description A maliciously constructed mail header can cause a one byte read past the end of a buffer, which is a memory safety issue whe...

Security Vulnerabilities fixed in Thunderbird 140.15 — Mozilla

Triggering an error condition in certain MIME bodies would cause uninitialized memory to be used. A maliciously constructed mail header could lead to a one byte read past the end of a buffer. A malicious IMAP server can trigger use-after-free and heap-memory disclosure by sending a crafted ID...