CVE-2026-4566 | Belkin F9K1122 1.00.33 /goform/formWISP5G webpage stack-based overflow

VDB-352403 · CVE-2026-4566 · GCVE-100-352403 BELKIN F9K1122 1.00.33 /GOFORM/FORMWISP5G WEBPAGE STACK-BASED OVERFLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 8.0 $0-$5k 3.07+ Summaryinfo A vulnerability identified as critical has been detected in Belkin F9K1122 1.00.33. The impacted element is the function formWISP5G of the file /goform/formWISP5G. The manipulation of the argument webpage leads to stack-based overflow. This vulnerability is listed as CVE-2026-4566. The attack may be initiated remotely. In addition, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way. Detailsinfo A vulnerability was found in Belkin F9K1122 1.00.33. It has been rated as critical. This issue affects the function formWISP5G of the file /goform/formWISP5G. The manipulation of the argument webpage with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-4566. The exploitation is known to be easy. The attack may be initiated remotely. Technical details as well as a public exploit are known. The exploit is available at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor Belkin Name F9K1122 Version 1.00.33 License commercial CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 8.8 VulDB Meta Temp Score: 8.0 VulDB Base Score: 8.8 VulDB Temp Score: 8.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Stack-based overflow CWE: CWE-121 / CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Access: Public Status: Proof-of-Concept Download: 🔒 Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/22/2026 Advisory disclosed 03/22/2026 +0 days VulDB entry created 03/22/2026 +0 days VulDB entry last update Sourcesinfo Advisory: github.com Status: Not defined CVE: CVE-2026-4566 (🔒) GCVE (CVE): GCVE-0-2026-4566 GCVE (VulDB): GCVE-100-352403 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 03/22/2026 09:36 Changes: 03/22/2026 09:36 (57) Complete: 🔍 Submitter: LtzHust Cache ID: 99:568:101 Submitinfo Accepted Submit #775132: Belkin F9K1122 1.00.33 Stack-based Buffer Overflow (by LtzHust) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸