CVE-2024-21798

MEDIUMNVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

Score 4.8 from GitHub Security Advisory published 2024-02-29. NVD baseline CVSS 4.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 4.8Exploit: None knownExposed: 0

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

ELECOM wireless LAN routers contain a cross-site scripting vulnerability. Assume that a malicious administrative user configures the affected product with specially crafted content. When another administrative user logs in and operates the product, an arbitrary script may be executed on the web browser. Note that WMC-X1800GST-B is also included in e-Mesh Starter Kit "WMC-2LX-B".

CVSS v3
4.8
EG Score
4.8(medium)
EG Risk
22(Track)
EG Risk 22/100SSVC: 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
Severity48% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
67%
KEV
Not listed

Published

February 28, 2024

Last Modified

February 14, 2025

References (4)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 38× 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.

Showing the most recent 100 of 121 total refreshes for this CVE.

  1. 2026-08-06 13:45 UTCEPSS rescore
  2. 2026-08-05 19:15 UTCEPSS rescore
  3. 2026-08-04 15:08 UTCEPSS rescore
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  18. 2026-07-23 02:33 UTCEG score recompute
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  20. 2026-07-22 14:07 UTCEPSS rescore
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  1. 2026-07-18 10:03 UTCEPSS rescore
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  20. 2026-07-05 02:29 UTCEPSS rescore
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  22. 2026-07-01 15:05 UTCEPSS rescore
  23. 2026-06-30 23:21 UTCEPSS rescore
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  25. 2026-06-29 14:05 UTCEPSS rescore
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  44. 2026-06-19 19:24 UTCEPSS rescore
  45. 2026-06-19 19:24 UTCEPSS rescore
  46. 2026-06-18 17:51 UTCEPSS rescore
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  48. 2026-06-17 17:52 UTCEPSS rescore
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  50. 2026-06-16 17:51 UTCEPSS rescore
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  52. 2026-06-15 17:47 UTCEPSS rescore
  53. 2026-06-14 23:16 UTCEPSS rescore
  54. 2026-06-13 22:59 UTCEPSS rescore
  55. 2026-06-13 22:59 UTCEPSS rescore
  56. 2026-06-12 23:11 UTCEPSS rescore
  57. 2026-06-11 13:59 UTCEPSS rescore
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  59. 2026-06-10 22:17 UTCEPSS rescore
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  62. 2026-06-08 14:16 UTCEPSS rescore
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  64. 2026-06-07 15:24 UTCEPSS rescore
  65. 2026-06-07 15:24 UTCEPSS rescore
  66. 2026-06-06 13:46 UTCEPSS rescore
  67. 2026-06-06 13:46 UTCEPSS rescore
  68. 2026-06-05 22:46 UTCEPSS rescore
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  70. 2026-06-05 06:09 UTCEPSS rescore
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  72. 2026-06-04 13:11 UTCEPSS rescore
  73. 2026-06-04 13:11 UTCEPSS rescore
  74. 2026-06-04 13:11 UTCEPSS rescore
  75. 2026-06-02 20:12 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2024-21798?
CVE-2024-21798 is a medium vulnerability published on February 28, 2024. ELECOM wireless LAN routers contain a cross-site scripting vulnerability. Assume that a malicious administrative user configures the affected product with specially crafted content. When another administrative user logs in and operates the product, an arbitrary script may be executed on the web…
When was CVE-2024-21798 disclosed?
CVE-2024-21798 was first published in the National Vulnerability Database on February 28, 2024, with the most recent update on February 14, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-21798 actively exploited?
CVE-2024-21798 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 32.5% of all scored CVEs.
What is the CVSS score of CVE-2024-21798?
CVE-2024-21798 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2024-21798?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-21798, 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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