Privilege escalation and improper access control in GCOM EPON 1GE C00R371V00B01 allows remote authenticated users to modify administrator only settings and extract administrator credentials.
CVE-2025-63409
HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence
Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-02-24. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, ghsa
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.8
- EG Score
- 8.8(medium)
- EPSS
- 19.6%
- KEV
- Not listed
Published
February 24, 2026
Last Modified
July 5, 2026
Advisory Details (1)
Auto-updated Jul 6, 2026No patch confirmed yet.
generic
CVE-Disclosures/CVE-2025-63409 at main · theShinigami/CVE-Disclosures · GitHub
https://github.com/theShinigami/CVE-Disclosures/tree/main/CVE-2025-63409Related CVEs(same CWE)
Same CWE
10 shownCWE-284
Frequently asked(5)
What is CVE-2025-63409?
CVE-2025-63409 is a high vulnerability published on February 24, 2026. Privilege escalation and improper access control in GCOM EPON 1GE C00R371V00B01 allows remote authenticated users to modify administrator only settings and extract administrator credentials.
When was CVE-2025-63409 disclosed?
CVE-2025-63409 was first published in the National Vulnerability Database on February 24, 2026, with the most recent update on July 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-63409 actively exploited?
CVE-2025-63409 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-63409?
CVE-2025-63409 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2025-63409?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-63409, 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.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2025-63409
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