Vulnerability · Published Mar 15, 2026 · Assigned by VulDB

CVE-2026-4167Belkin F9K1122 formReboot 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 0.5% (higher than 41% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.5%top 58.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was determined in Belkin F9K1122 1.00.33. This affects the function formReboot of the file /goform/formReboot. This manipulation of the argument webpage causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Alpine:v3.21	perl	0	ALPINE-CVE-2026-4167
Alpine:v3.22	perl	0	ALPINE-CVE-2026-4167

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-351074 | Belkin F9K1122 formReboot stack-based overflow vdb-entry, technical-description
VDB-351074 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #769727 | Belkin F9K1122 1.00.33 Stack-based Buffer Overflow third-party-advisory
https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_152/README.md related
https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_152/README.md#proof-of-concept-poc exploit