CVE-2026-7719CRITICAL 9.8EPSS p44.9%

CVE-2026-7719CVE-2026-7719

Description

A security flaw has been discovered in Totolink WA300 5.2cu.7112_B20190227. The affected element is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument http_host results in buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.62% probability of exploitation · percentile 44.9% · 2026-06-19T12:03:05Z
Published2026-05-04
Last modified2026-05-04

Underlying weaknesses· 2

CWE-119CWE-120

References

  1. https://lavender-bicycle-a5a.notion.site/TOTOLINK-WA300-loginAuth-34553a41781f8050b8ffc9e90a103cd5
  2. https://vuldb.com/submit/807197
  3. https://vuldb.com/vuln/360895
  4. https://vuldb.com/vuln/360895/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.