CVE-2025-28238

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2025-04-18. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

Improper session management in Elber REBLE310 Firmware v5.5.1.R , Equipment Model: REBLE310/RX10/4ASI allows attackers to execute a session hijacking attack.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

April 18, 2025

Last Modified

April 15, 2026

Advisory Details (1)

Auto-updated Sep 17, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

my--cve-vulnerability-research/CVE-2025-28238 at main · shiky8/my--cve-vulnerability-research · GitHub

https://github.com/shiky8/my--cve-vulnerability-research/tree/main/CVE-2025-28238

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 25× 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 174 total refreshes for this CVE.

  1. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-16 14:07 UTCEPSS rescore
  3. 2026-09-16 05:13 UTCEPSS rescore
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  1. 2026-08-19 17:03 UTCEPSS rescore
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  21. 2026-07-28 15:35 UTCEPSS rescore
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  23. 2026-07-26 14:53 UTCEPSS rescore
  24. 2026-07-25 14:17 UTCEPSS rescore
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  26. 2026-07-23 02:52 UTCEG score recompute
  27. 2026-07-22 14:07 UTCEPSS rescore
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  48. 2026-07-11 08:27 UTCEPSS rescore
  49. 2026-07-11 08:27 UTCEPSS rescore
  50. 2026-07-09 19:09 UTCEPSS rescore
  51. 2026-07-08 15:14 UTCEPSS rescore
  52. 2026-07-07 13:45 UTCEPSS rescore
  53. 2026-07-06 16:27 UTCEPSS rescore
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  65. 2026-06-28 04:55 UTCEPSS rescore
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  67. 2026-06-27 03:08 UTCEPSS rescore
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  72. 2026-06-23 21:32 UTCEPSS rescore
  73. 2026-06-23 21:32 UTCEPSS rescore
  74. 2026-06-22 14:25 UTCEPSS rescore
  75. 2026-06-22 14:25 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2025-28238?
CVE-2025-28238 is a critical vulnerability published on April 18, 2025. Improper session management in Elber REBLE310 Firmware v5.5.1.R , Equipment Model: REBLE310/RX10/4ASI allows attackers to execute a session hijacking attack.
When was CVE-2025-28238 disclosed?
CVE-2025-28238 was first published in the National Vulnerability Database on April 18, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-28238 actively exploited?
CVE-2025-28238 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 64.2% of all scored CVEs.
What is the CVSS score of CVE-2025-28238?
CVE-2025-28238 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2025-28238?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-28238, 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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