CVE-2025-50681 Null dereference in n/a
Remote attackers can crash igmpproxy via crafted IGMPv3 packets, causing denial of service on embedded networking devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-50681?
CVE-2025-50681 is a high-severity vulnerability in n/a, published on 19 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
igmpproxy 0.4 before commit 2b30c36 allows remote attackers to cause a denial of service (application crash) via a crafted IGMPv3 membership report packet with a malicious source address. Due to insufficient validation in the `recv_igmp()` function in src/igmpproxy.c, an invalid group record type can trigger a NULL pointer dereference when logging the address using `inet_fmtsrc()`. This vulnerability can be exploited by sending malformed multicast traffic to a host running igmpproxy, leading to a crash. igmpproxy is used in various embedded networking environments and consumer-grade IoT devices (such as home routers and media gateways) to handle multicast traffic for IPTV and other streaming services. Affected devices that rely on unpatched versions of igmpproxy may be vulnerable to remote denial-of-service attacks across a LAN .
Weakness: CWE-120
Which versions are affected by CVE-2025-50681?
It affects 1 product.
Products include Pali Igmpproxy.
How do I fix CVE-2025-50681?
No fix has been published for CVE-2025-50681 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-50681 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-50681 exists.
Sources
Also known as DEBIAN-CVE-2025-50681, GHSA-r9q2-28x2-qh78, UBUNTU-CVE-2025-50681.