CVE-2026-4565HIGH 8.8EPSS p56.2%

CVE-2026-4565CVE-2026-4565

Description

A vulnerability was detected in Tenda AC21 16.03.08.16. Impacted is the function formSetQosBand of the file /goform/SetNetControlList. Performing a manipulation of the argument list results in buffer overflow. The attack can be initiated remotely. The exploit is now public and may be used.

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
EPSS0.94% probability of exploitation · percentile 56.2% · 2026-06-19T12:03:05Z
Published2026-03-23
Last modified2026-04-03

Underlying weaknesses· 2

CWE-119CWE-120

References

  1. https://github.com/hellonestor/killallbug/issues/14
  2. https://github.com/hellonestor/killallbug/releases/tag/poc
  3. https://vuldb.com/?ctiid.352402
  4. https://vuldb.com/?id.352402
  5. https://vuldb.com/?submit.775119
  6. https://www.tenda.com.cn/

2

TypeTargetConfidenceTier
WeaknessImproper Restriction of Operations within the Bounds of a Memory Buffercwe-1190%live
WeaknessBuffer Copy without Checking Size of Input ('Classic Buffer Overflow')cwe-1200%live

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