CVE-2026-53921-PoC-Exploit

CVE-2026-53921 – odhcpd Stack Overflow ⚠️ For educational and authorized testing only. Unauthorized use is illegal. 📖 Vulnerability Overview CVE-2026-53921 is a critical stack buffer overflow in OpenWrt’s odhcpd daemon – the default DHCPv6/DHCPv4/RA server. 🔍 How it works The vulnerability exists...

CVE-2026-53921

🚨 CVE-2026-53921 - odhcpd Critical Stack-Based Buffer Overflow in OpenWrt odhcpd A remote unauthenticated stack-based buffer overflow allowing potentialRemote Code Execution RCE with root privileges. 📖 Overview ⚡ Description CVE-2026-53921 is a critical stack-based buffer overflow affecting the...

LuCI DHCPv6 Cross Site Scripting

OpenWrt LuCI suffers from a cross site scripting vulnerability. An unauthenticated adjacent-network attacker can inject malicious HTML/JavaScript via DHCPv6 Client FQDN option 39. The hostname is stored by odhcpd and rendered unsafely via innerHTML in LuCI status tables. Exploit Title: LuCI DHCPv...

CVE-2026-62948

OpenWrt is a Linux operating system targeting embedded devices. Prior to 25.12.5, odhcpd writes a DHCPv6 client FQDN option 39 hostname into /tmp/odhcpd.leases through src/statefiles.c statefileswritestate6 and statefileswritestate4 without escaping, allowing newline injection of forged lease lin...

CVE-2026-62948

OpenWrt odhcpd/LuCI vulnerability CVE-2026-62948: Before 25.12.5, the DHCPv6 client FQDN option 39 hostname is written into /tmp/odhcpd.leases without escaping, allowing newline injection of forged lease lines. LuCI displays these lines in the Active DHCPv6 Leases page via rpcd-mod-luci getDHCPLe...

CVE-2026-62948 OpenWrt odhcpd/LuCI: unauthenticated DHCPv6 client can inject lease-file lines via FQDN hostname → stored XSS in the LuCI admin UI

OpenWrt is a Linux operating system targeting embedded devices. Prior to 25.12.5, odhcpd writes a DHCPv6 client FQDN option 39 hostname into /tmp/odhcpd.leases through src/statefiles.c statefileswritestate6 and statefileswritestate4 without escaping, allowing newline injection of forged lease lin...

PT-2026-60254

Name of the Vulnerable Software and Affected Versions OpenWrt versions prior to 25.12.5 Description The odhcpd component writes a DHCPv6 client FQDN option 39 hostname into the /tmp/odhcpd.leases file via the statefiles write state6 and statefiles write state4 functions without proper escaping...

CVE-2017-17867

Inteno iopsys 2.0-3.14 and 4.0 devices allow remote authenticated users to execute arbitrary OS commands by modifying the leasetrigger field in the odhcpd configuration to specify an arbitrary program, as demonstrated by a program located on an SMB share. This issue existed because the...

CVE-2017-17867

Inteno iopsys 2.0-3.14 and 4.0 devices allow remote authenticated users to execute arbitrary OS commands by modifying the leasetrigger field in the odhcpd configuration to specify an arbitrary program, as demonstrated by a program located on an SMB share. This issue existed because the...

Design/Logic Flaw

Inteno iopsys 2.0-3.14 and 4.0 devices allow remote authenticated users to execute arbitrary OS commands by modifying the leasetrigger field in the odhcpd configuration to specify an arbitrary program, as demonstrated by a program located on an SMB share. This issue existed because the...

CVE-2017-17867

Inteno iopsys 2.0-3.14 and 4.0 devices allow remote authenticated users to execute arbitrary OS commands by modifying the leasetrigger field in the odhcpd configuration to specify an arbitrary program, as demonstrated by a program located on an SMB share. This issue existed because the...

CVE-2017-17867

CVE-2017-17867 concerns Inteno IOPSYS devices (2.0–3.14 and 4.0) where remote authenticated users can execute arbitrary OS commands by manipulating the leasetrigger field in the odhcpd config via an SMB share, due to insufficient protection of OpenWrt config (not using /etc/uci-defaults). Connect...

CVE-2017-17867

Inteno iopsys 2.0-3.14 and 4.0 devices allow remote authenticated users to execute arbitrary OS commands by modifying the leasetrigger field in the odhcpd configuration to specify an arbitrary program, as demonstrated by a program located on an SMB share. This issue existed because the...