Signal is active with 1 mentions in latest observed window
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NVD description
OpenWrt Project is a Linux operating system targeting embedded devices. In versions prior to 24.10.6 and 25.12.1, the mdns daemon has a Stack-based Buffer Overflow vulnerability in the match_ipv6_addresses function, triggered when processing PTR queries for IPv6 reverse DNS domains (.ip6.arpa) received via multicast DNS on UDP port 5353. During processing, the domain name from name_buffer is copied via strcpy into a fixed 256-byte stack buffer, and then the reverse IPv6 request is extracted into a buffer of only 46 bytes (INET6_ADDRSTRLEN). Because the length of the data is never validated before this extraction, an attacker can supply input larger than 46 bytes, causing an out-of-bounds write. This allows a specially crafted DNS query to overflow the stack buffer in match_ipv6_addresses, potentially enabling remote code execution. This issue has been fixed in versions 24.10.6 and 25.12.1.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
CVE-2026-30872 OpenWrt Project is a Linux operating system targeting embedded devices. In versions prior to 24.10.6 and 25.12.1, the mdns daemon has a Stack-based Buffer Overflow vu… https://www.cve.org/CVERecord?id=CVE-2026-30872
Post summary
The OpenWrt mdns daemon has a stack‑based buffer overflow in versions prior to 24.10.6 and 25.12.1.
🚨 CVE-2026-30872: OpenWrt Project has a Stack-base... Remote stack smash via crafted mDNS PTR queries - 46-byte buffer, no bounds checking, strcpy() straight to RCE on milli... https://zerodaysignal.com/vulnerability/CVE-2026-30872 #netsec #vulnerability #CVE #sysadmin #zeroday
Post summary
The post announces a stack‑based buffer overflow vulnerability (CVE‑2026‑30872) in OpenWrt that allows remote code execution via malformed mDNS PTR queries, linking to a vulnerability page for further details.
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| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| OS | openwrt | openwrt | - | - | - |