CVE-2025-4999

MEDIUMNVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

Score 6.3 from GitHub Security Advisory published 2025-05-20. NVD baseline CVSS 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 9%CVSS: 6.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.3
EG Score
6.3(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity63% × 45%
Exploitation9% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
9%
EPSS %ILE
95%
KEV
Not listed

Published

May 20, 2025

Last Modified

June 12, 2025

References (5)

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-26 14:54 UTCEPSS rescore
  2. 2026-07-25 14:17 UTCEPSS rescore
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  6. 2026-07-23 02:57 UTCEG score recompute
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  1. 2026-07-11 08:27 UTCEPSS rescore
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  44. 2026-06-12 23:11 UTCEPSS rescore
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  50. 2026-06-08 14:16 UTCEPSS rescore
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  52. 2026-06-07 15:24 UTCEPSS rescore
  53. 2026-06-06 13:47 UTCEPSS rescore
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  57. 2026-06-05 06:10 UTCEPSS rescore
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  67. 2026-05-31 00:16 UTCEPSS rescore
  68. 2026-05-31 00:16 UTCEPSS rescore
  69. 2026-05-30 04:53 UTCEG score recompute
  70. 2026-05-30 04:53 UTCGHSA enrichment
  71. 2026-05-29 13:44 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-4999?
CVE-2025-4999 is a medium vulnerability published on May 20, 2025. 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 sub4153FC of the file /cgi-bin/sysconf.cgi of the component HTTP POST Request Handler. The manipulation of the argument supplicantrndiden leads to…
When was CVE-2025-4999 disclosed?
CVE-2025-4999 was first published in the National Vulnerability Database on May 20, 2025, with the most recent update on June 12, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-4999 actively exploited?
CVE-2025-4999 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9% probability of exploitation in the next 30 days, which ranks it in the top 5.1% of all scored CVEs.
What is the CVSS score of CVE-2025-4999?
CVE-2025-4999 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2025-4999?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-4999, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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