CVE-2025-4999CRITICAL 9.8EPSS p95.4%

CVE-2025-4999CVE-2025-4999

Description

A vulnerability was found in Linksys FGW3000-AH and FGW3000-HK up to 1.0.17.000000 and classified as critical. Affected by this issue is the function sub_4153FC of the file /cgi-bin/sysconf.cgi of the component HTTP POST Request Handler. The manipulation of the argument supplicant_rnd_id_en leads to command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

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
EPSS11.32% probability of exploitation · percentile 95.4% · 2026-06-18T12:00:27Z
Published2025-05-20
Last modified2025-06-12

Underlying weaknesses· 2

CWE-74CWE-77

References

  1. https://github.com/CH13hh/tmp_store_cc/blob/main/FGW3000/1.md
  2. https://vuldb.com/?ctiid.309650
  3. https://vuldb.com/?id.309650
  4. https://vuldb.com/?submit.565909
  5. https://www.linksys.com/

2

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')cwe-740%live
WeaknessImproper Neutralization of Special Elements used in a Command ('Command Injection')cwe-770%live

Related by meaning· 6

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