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Public proof of concept

CVE-2025-55847

A public proof of concept exists; no exploitation attested.

  • Published2025-09-26
  • WeaknessCWE-120

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Wavlink M86X3A_V240730 contains a buffer overflow vulnerability in the /cgi-bin/ExportAllSettings.cgi file. The vulnerability arises because the Cookie parameter does not properly validate the length of input data. Attackers can exploit this to execute arbitrary code or cause a denial of service (DoS) on the system

Timeline

dates in UTC
  1. 2025-09-2618:15CVE publishedNVD

Versions per branch

NVD
Wavlink wl-wn586x3a firmwareversion to verify
BranchAffectedFixed in
—= m86x3a_v240730no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2025-09-26
Last Modified
2026-11-05
NVD status
Analyzed
GitHub Advisory
GHSA-fm5r-j2g9-7g6v

Frequently asked questions

What is CVE-2025-55847?

Wavlink M86X3A_V240730 contains a buffer overflow vulnerability in the /cgi-bin/ExportAllSettings.cgi file. The vulnerability arises because the Cookie parameter does not properly validate the length of input data. Attackers can exploit this to execute arbitrary code or cause a denial of service (DoS) on the system

Is CVE-2025-55847 actively exploited?

A proof-of-concept exploit exists for CVE-2025-55847, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-55847?

CVE-2025-55847 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record