CVE-2025-50681
igmpproxy 0.4 before commit 2b30c36 allows remote attackers to cause a denial of service ...
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 .
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
7.5
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 .
- Record
CVE-2025-50681- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-120
- Updated
- 2026-11-02
EUVDEUVD-2025-204534
7.5
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 .
- Record
EUVD-2025-204534- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-r9q2-28x2-qh78
7.5
igmpproxy 0.4 before commit 2b30c36 allows remote attackers to cause a denial of service ...
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 .
- Record
GHSA-r9q2-28x2-qh78- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-120
- Updated
- 2026-11-02
NVD
7.5
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 .
- Record
CVE-2025-50681- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-120
- Updated
- 2026-11-02
OSV
7.5
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 .
- Record
CVE-2025-50681- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2025-50681
7.5
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 .
- Record
DEBIAN-CVE-2025-50681- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2025-50681
7.5
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 .
- Record
UBUNTU-CVE-2025-50681- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
igmpproxyDebian:12 |
All versions, plus listed versions 0.3-10.3-2 |
None known |
igmpproxyDebian:13 |
All versions, plus listed versions 0.3-10.3-2 |
None known |
igmpproxyUbuntu:18.04:LTS |
All versions, plus listed versions 0.1-10.2-10.2.1-1 |
None known |
igmpproxyUbuntu:20.04:LTS |
All versions, plus listed versions 0.2.1-1 |
None known |
igmpproxyUbuntu:22.04:LTS |
All versions, plus listed versions 0.3-1 |
None known |
igmpproxyUbuntu:24.04:LTS |
All versions, plus listed versions 0.3-1 |
None known |
igmpproxyUbuntu:25.10 |
All versions, plus listed versions 0.3-1 |
None known |
igmpproxyUbuntu:26.04:LTS |
All versions, plus listed versions 0.3-10.3-1build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-50681 is a high vulnerability (CVSS 7.5) in Pali Igmpproxy, published December 19, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.52%, the 44th percentile. No source names a fixed version.
References
github.com/pali/igmpproxy/issues/97
github.com/younix/igmpproxy/commit/2b30c36e6ab5b21defb76ec6458ab7687984484c
gist.github.com/miora-sora/dac1612d16c45c2aedb8605478adc28f
nvd.nist.gov/vuln/detail/CVE-2025-50681
github.com/advisories/GHSA-r9q2-28x2-qh78
github.com/CVEProject/cvelistV5/tree/main/cves/2025/50xxx/CVE-2025-50681.json
security-tracker.debian.org/tracker/CVE-2025-50681
ubuntu.com/security/CVE-2025-50681
cve.org/CVERecord?id=CVE-2025-50681