CVE-2026-4861HIGH 8.8EPSS p53.4%

CVE-2026-4861CVE-2026-4861

Description

A weakness has been identified in Wavlink WL-NU516U1 260227. This vulnerability affects the function ftext of the file /cgi-bin/nas.cgi. This manipulation of the argument Content-Length causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. 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
EPSS0.85% probability of exploitation · percentile 53.4% · 2026-06-19T12:03:05Z
Published2026-03-26
Last modified2026-04-30

Underlying weaknesses· 2

CWE-119CWE-121

References

  1. https://github.com/Wlz1112/WAVLINK-NU516U1-V260227/blob/main/Content-Length.md
  2. https://vuldb.com/?ctiid.353192
  3. https://vuldb.com/?id.353192
  4. https://vuldb.com/?submit.776217

2

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

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2026-3703
CVE
CVE-2026-8227
CVE
CVE-2026-8228
CVE
CVE-2026-5004
CVE
CVE-2026-8229
CVE
CVE-2026-8230
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.