Vulnerability · Published Mar 29, 2026 · Assigned by VulDB

CVE-2026-5043Belkin F9K1122 Parameter formSetPassword stack-based overflow

High 8.8

In plain English

A high-severity stack buffer overflow in F9K1122 from Belkin. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.8%top 42.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A weakness has been identified in Belkin F9K1122 1.00.33. The impacted element is the function formSetPassword of the file /goform/formSetPassword of the component Parameter Handler. This manipulation of the argument webpage causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
Belkin	F9K1122	1.00.33

Weakness: CWE-121, 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-353966 | Belkin F9K1122 Parameter formSetPassword stack-based overflow vdb-entry, technical-description
VDB-353966 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #779124 | Belkin F9K1122 1.00.33 Stack-based Buffer Overflow third-party-advisory
https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_154/README.md exploit