Vulnerability · Published Oct 5, 2025 · Assigned by VulDB

CVE-2025-11294Belkin F9K1015 formL2TPSetup buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in F9K1015 from Belkin. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 71% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.3%top 28.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was detected in Belkin F9K1015 1.00.10. Affected by this issue is some unknown functionality of the file /goform/formL2TPSetup. The manipulation of the argument L2TPUserName results in buffer overflow. The attack may be launched remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
Belkin	F9K1015	1.00.10

Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-327175 | Belkin F9K1015 formL2TPSetup buffer overflow vdb-entry, technical-description
VDB-327175 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #661298 | Belkin F9K1015 1.00.10 Buffer Overflow third-party-advisory
https://github.com/panda666-888/vuls/blob/main/belkin/f9k1015/formL2TPSetup.md related
https://github.com/panda666-888/vuls/blob/main/belkin/f9k1015/formL2TPSetup.md#poc exploit