CVE-2026-4566HIGH 8.8EPSS p47.8%

CVE-2026-4566CVE-2026-4566

Description

A flaw has been found in Belkin F9K1122 1.00.33. The affected element is the function formWISP5G of the file /goform/formWISP5G. Executing a manipulation of the argument webpage can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS0.69% probability of exploitation · percentile 47.8% · 2026-06-19T12:03:05Z
Published2026-03-23
Last modified2026-04-29

Underlying weaknesses· 2

CWE-119CWE-121

References

  1. https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_151/README.md
  2. https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_151/README.md#proof-of-concept-poc
  3. https://vuldb.com/?ctiid.352403
  4. https://vuldb.com/?id.352403
  5. https://vuldb.com/?submit.775132

2

TypeTargetConfidenceTier
WeaknessImproper Restriction of Operations within the Bounds of a Memory Buffercwe-1190%live
WeaknessStack-based Buffer Overflowcwe-1210%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.