CVE-2026-6157HIGH 8.8EPSS p37.1%

CVE-2026-6157CVE-2026-6157

Description

A vulnerability was detected in Totolink A800R 4.1.2cu.5137_B20200730. This impacts the function setAppEasyWizardConfig in the library /lib/cste_modules/app.so. The manipulation of the argument apcliSsid results in buffer overflow. The attack can be executed 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
EPSS0.47% probability of exploitation · percentile 37.1% · 2026-06-18T12:00:27Z
Published2026-04-13
Last modified2026-04-27

Underlying weaknesses· 2

CWE-119CWE-120

References

  1. https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A800R/01_Buffer_Overflow_setAppEasyWizardConfig.md
  2. https://vuldb.com/submit/793114
  3. https://vuldb.com/vuln/357037
  4. https://vuldb.com/vuln/357037/cti
  5. https://www.totolink.net/

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.