CVE-2026-11834

CVE-2026-11834 PoC TP-Link DHCP Option 66 Unauthenticated RCE CVE-2026-11834 Overview A command injection vulnerability CWE-78 in the DHCP Option 66 "TFTP Server Name" handling of TP-Link router firmware allows an unauthenticated attacker on the same network segment to execute arbitrary commands ...

dhcpoptinj

Inyector de opciones DHCP ¿Alguna vez has querido interceptar peticiones DHCP e insertar algunas opciones DHCP adicionales, sin que el remitente lo sepa? Probablemente no. Sin embargo, si alguna vez surge la necesidad, dhcpoptinj con suerte te ayudará. Por qué Puede haber muchas razones para...

freebsd-dhclient-poc

CVE-2020-7461 Reproducer PoC Authors: Moshe Kol, Shlomi Oberman Reproducer PoC for FreeBSD dhclient heap-based buffer overflow vulnerability when parsing DHCP option 119 CVE-2020-7461. The problem resides in the function findsearchdomainnamelen in the file sbin/dhclient/options.c. This function i...

CVE-2026-9997-VPN-Split-Tunneling-Bypass-via-DHCP-Option-Injection

CVE-2026-9997 – VPN Split‑Tunneling Bypass via DHCP Option Injection Program Code Python simulated DHCP server + client !/usr/bin/env python3 roguedhcpserver.py - Injects a static route to bypass VPN split tunnel import socket, struct, threading def senddhcpofferclientmac, offerip: Craft a DHCP...

Security update for wicked (important)

openSUSE security update: security update for wicked ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:21669-1 Rating: important References: bsc1274627 Cross-References: CVE-2026-71401 CVE-2026-71402 CVSS scores: CVE-2026-71401 SUSE : 7.5...

OPENSUSE-SU-2026:21669-1 Security update for wicked

This update for wicked fixes the following issues: Changes in wicked: - Fix two OOB reads in nicaptureinspectudpheader and improve: - Reject packets with iplen ihl to avoid a sizet underflow of the UDP length, which the checksum truncates to uint16t bsc1274627, CVE-2026-71401. - Set payloadlen to...

SUSE-SU-2026:2720-1 Security update for dracut

This update for dracut fixes the following issue - CVE-2026-6893: Root code execution via DHCP options command injection bsc1268322. Changes for dracut: - Update to version 055+suse.365.g79144c5: fixnetwork-legacy: sanitize DHCP values in dhclient-script.sh bsc1268322, CVE-2026-6893...

Exploit for CVE-2026-11834

CVE-2026-11834 PoC TP-Link DHCP Option 66 Unauthenticated RC...

CVE-2026-11834

A command injection vulnerability has been identified in the DHCP option processing logic in multiple TP-Link router models, due to insufficient validation of externally supplied DHCP option data. An adjacent attacker may exploit this vulnerability by supplying crafted DHCP responses, potentially...

CVE-2026-11834 Unauthenticated Command Injection via DHCP Option Handling in Multiple TP-Link Routers

A command injection vulnerability has been identified in the DHCP option processing logic in multiple TP-Link router models, due to insufficient validation of externally supplied DHCP option data. An adjacent attacker may exploit this vulnerability by supplying crafted DHCP responses, potentially...

EUVD-2026-38339

A command injection vulnerability has been identified in the DHCP option processing logic in multiple TP-Link router models, due to insufficient validation of externally supplied DHCP option data. An adjacent attacker may exploit this vulnerability by supplying crafted DHCP responses, potentially...

CVE-2026-11834: Improper Neutralization of Special Elements used in an OS Command

A command injection vulnerability has been identified in the DHCP option processing logic in multiple TP-Link router models, due to insufficient validation of externally supplied DHCP option data. An adjacent attacker may exploit this vulnerability by supplying crafted DHCP responses, potentially...

CVE-2025-70102

A NULL pointer dereference occurs in Roy Marples NetworkConfiguration/dhcpcd 10.3.0 while parsing configuration options. In parseoption src/if-options.c:1886, the code performs a member access on a NULL pointer of type 'struct dhcpopt' when an unexpected/invalid option token or parsing state caus...

CVE-2025-70102

A NULL pointer dereference occurs in Roy Marples NetworkConfiguration/dhcpcd 10.3.0 while parsing configuration options. In parseoption src/if-options.c:1886, the code performs a member access on a NULL pointer of type 'struct dhcpopt' when an unexpected/invalid option token or parsing state caus...

CVE-2025-70102

A NULL pointer dereference occurs in Roy Marples NetworkConfiguration/dhcpcd 10.3.0 while parsing configuration options. In parseoption src/if-options.c:1886, the code performs a member access on a NULL pointer of type 'struct dhcpopt' when an unexpected/invalid option token or parsing state caus...

CVE-2026-45160 ESF-IDF: Out-of-bounds Read in lwIP DHCP Server Option Parser

ESF-IDF is the Espressif Internet of Things IOT Development Framework. In versions 5.2.7, 5.3.5, 5.4.4, 5.5.4, and 6.0.1, an out-of-bounds read flaw exists in the DHCP server option parser parseoptions in components/lwip/apps/dhcpserver/dhcpserver.c shipped with ESP-IDF's lwIP component. The pars...

ESP-IDF 缓冲区错误漏洞

ESP-IDF is an open-source development framework for Espressif’s SoCs, supported on Windows, Linux, and macOS. Versions 5.2.7, 5.3.5, 5.4.4, 5.5.4, and 6.0.1 of ESP-IDF contain buffer overflow vulnerabilities. These vulnerabilities stem from an out-of-bounds read issue in the DHCP server option...

CVE-2026-34960 barebox Out-of-Bounds Read in DHCP Option Parsing

barebox prior to version 2026.04.0 contains an out-of-bounds read vulnerability in DHCP option parsing within the dhcpmessagetype function that fails to verify the options pointer remains within received packet bounds. An attacker on the same broadcast domain can send a crafted DHCP Offer or ACK...

CVE-2026-34960 barebox Out-of-Bounds Read in DHCP Option Parsing

barebox prior to version 2026.04.0 contains an out-of-bounds read vulnerability in DHCP option parsing within the dhcpmessagetype function that fails to verify the options pointer remains within received packet bounds. An attacker on the same broadcast domain can send a crafted DHCP Offer or ACK...

CLSA-2026-1776960429 busybox: Fix of 4 CVEs

CVE-2018-1000517: fix heap buffer overflow in wget chunked decoding - CVE-2017-16544: reject terminal control sequences in shell tab completion - CVE-2018-20679: reject zero-length DHCP options and validate 4-byte option lengths - CVE-2019-5747: validate DHCPSUBNET option length before decoding...