CVE-2026-5004HIGH 8.8EPSS p47.8%

CVE-2026-5004CVE-2026-5004

Description

A vulnerability was determined in Wavlink WL-WN579X3-C 231124. This impacts the function sub_4019FC of the file /cgi-bin/firewall.cgi of the component UPNP Handler. Executing a manipulation of the argument UpnpEnabled can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. 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
Published2026-03-28
Last modified2026-04-03

Underlying weaknesses· 3

CWE-119CWE-121CWE-787

References

  1. https://github.com/Litengzheng/vul_db/blob/main/WL-WN579X3-C/vul_200/README.md
  2. https://vuldb.com/submit/779149
  3. https://vuldb.com/vuln/353891
  4. https://vuldb.com/vuln/353891/cti

3

TypeTargetConfidenceTier
WeaknessImproper Restriction of Operations within the Bounds of a Memory Buffercwe-1190%live
WeaknessStack-based Buffer Overflowcwe-1210%live
WeaknessOut-of-bounds Writecwe-7870%live

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