CVE-2026-44950

CVE-2026-44950 is a heap buffer overflow in the libXfont2 font-server client (fs_read_glyphs() in src/fc/fserve.c). The function validates each glyph's source slice individually but never checks whether the cumulative destination offset exceeds the allocated buffer size. A malicious font server c...

EUVD-2026-75300

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c indexes the per-character encoding array using numchars from the FSQueryXBitmaps16 reply, but that array was allocated with a size derived from numextents in the separate FSQueryXExtents16 reply. The two CARD32 fields are never...

CVE-2026-59679 fs_read_glyphs() heap OOB read/write via encoding array index mismatch in libXfont2

fsreadglyphs in the libXfont2 font-server client src/fc/fserve.c indexes the per-character encoding array using numchars from the FSQueryXBitmaps16 reply, but that array was allocated with a size derived from numextents in the separate FSQueryXExtents16 reply. The two CARD32 fields are never...

CVE-2026-59679

CVE-2026-59679 affects the libXfont2 font-server client (X.Org X11). The function fs_read_glyphs() in src/fc/fserve.c indexes the encoding[] array using num_chars from the FS_QueryXBitmaps16 reply, but that array was allocated based on num_extents from the separate FS_QueryXExtents16 reply—two fi...

CVE-2026-61908

A flaw was found in cyrus-imapd. An authenticated user could exploit this vulnerability by attempting to download a specially crafted JMAP JSON Meta Application Protocol blob ID. This action could lead to reading beyond the intended memory boundary, potentially exposing sensitive information from...

vim: Vim: Information disclosure and denial of service via crafted Unicode characters in terminal emulator

A flaw was found in Vim. A remote attacker could exploit a heap-based buffer overflow and an out-of-bounds read vulnerability in Vim's terminal emulator. This occurs when processing specially crafted Unicode supplementary plane characters, potentially leading to information disclosure and denial ...

Important: Red Hat Security Advisory: vim security update

An update for vim is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the...

vim: Vim: Heap buffer overflow allows arbitrary code execution

A heap buffer overflow in Vim allows a local attacker to cause a denial of service or potentially execute arbitrary code. The flaw is triggered by processing a specially crafted spell file, where the setsofo function fails to reset internal data between sections, leading to an out-of-bounds write...

CVE-2021-3156-Baron-Samedit

CVE-2021-3156 - "Baron Samedit" Lab & Exploit This repository provides a self-contained, educational environment to understand and exploit CVE-2021-3156 , a heap-based buffer overflow in sudo that allows any unprivileged user to gain root privileges on vulnerable systems sudo versions prior to...

Exploit for Heap-based Buffer Overflow in F5 Nginx_Gateway_Fabric

CVE-2026-42533 Lab — NGINX Two-Pass Capture Clobbering RCE...

nginx-cve-2026-42945-check

NGINX CVE-2026-42945 Local Checker Language: 中文 | English This repository provides two standalone local scripts for checking whether a Linux or Windows server has Nginx, OpenResty, or Tengine instances that may be exposed to CVE-2026-42945 related risk. The scripts are read-only. They do not run ...

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: Heap-based Buffer Overflow via malicious backend servers

A flaw was found in Apache HTTP Server. This heap-based buffer overflow vulnerability can be exploited by a malicious backend server when using ProxyPassReverseCookie directives. This could lead to a denial of service DoS condition, making the server unavailable to legitimate users...

Apache HTTP Server: mod_proxy_ajp: Apache HTTP Server mod_proxy_ajp: Arbitrary code execution via heap-based buffer overflow

A flaw was found in modproxyajp of Apache HTTP Server. This heap-based buffer overflow vulnerability allows a remote attacker, by connecting to a malicious AJP Apache JServ Protocol server, to send a specially crafted message. This message can cause modproxyajp to write attacker-controlled data...

httpd: Apache HTTP Server: Heap-based Buffer Overflow via untrusted content in mod_xml2enc

A flaw was found in Apache HTTP Server, specifically within the modxml2enc module. This heap-based buffer overflow vulnerability can be triggered when processing untrusted content through the xml2StartParse function. A remote attacker could potentially exploit this to cause a denial of service,...

Orthanc DICOM Server

ADVISORY SUMMARY Successful exploitation of this vulnerability could allow an authenticated remote attacker to write past the end of a heap allocation when Orthanc decodes an attacker-supplied PNG or JPEG image, resulting in a crash of the Orthanc process and a denial-of-service condition. 2...

CVE-2026-42945

CVE-2026-42945: NGINX Rift Heap Buffer Overflow Vulnerability Overview CVE-2026-42945 is a critical heap buffer overflow vulnerability in the NGINX server, known as "NGINX Rift". The vulnerability exists in the processing logic of the rewrite and set directives in NGINX. When specific configurati...

CVE-2025-14847-MongoBleed-Exploit

CVE-2025-14847 - MongoBleed 👨‍💻 Author: Furkan KAYAPINAR @FurkanKAYAPINAR ⚠️ EDUCATIONAL PURPOSE ONLY Lab environment and exploit script for the critical unauthenticated memory-leak vulnerability in MongoDB Server. 📋 Table of Contents Vulnerability Overview Affected Versions Installation Lab...

CVE-2025-49844

CVE-2025-49844 RediShell AI-made Revshell PoC Untested completition of the Redishell PoC made by AI. Original PoC: https://github.com/raminfp/redisexploit/blob/main/exploitpoc.py Korean Piece: https://github.com/dwisiswant0/CVE-2025-49844/blob/master/CVE-2025-49844.lua Progress ? We later went...

google-chrome-emergency-update

Chrome Emergency Security Update This repository contains information and tools related to Google's emergency Chrome update addressing critical security vulnerabilities. 🚨 Emergency Update Notice Google has issued an emergency Chrome update to patch critical zero-day vulnerabilities being activel...