CVE-2025-15497

LOWNVD 3.8

3.8

Insufficient epoch key slot processing in OpenVPN 2.7_alpha1 through 2.7_rc5 allows remote authenticated users to trigger an assert resulting in a denial of service

CVSS v3: 3.8
EG Score: 0.0(none)
EPSS: 20.8%
KEV: Not listed

Published

January 30, 2026

Last Modified

April 15, 2026

References (2)

security@openvpnhttps://community.openvpn.net/Security%20Announcements/CVE-2025-15497
security@openvpnhttps://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00156.html

Weakness Classification(1)

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

CWE-617

Data Freshness Timeline

(refreshed 19× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
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Frequently asked(5)

What is CVE-2025-15497?

CVE-2025-15497 is a low vulnerability published on January 30, 2026. Insufficient epoch key slot processing in OpenVPN 2.7alpha1 through 2.7rc5 allows remote authenticated users to trigger an assert resulting in a denial of service

When was CVE-2025-15497 disclosed?

CVE-2025-15497 was first published in the National Vulnerability Database on January 30, 2026, 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-2025-15497 actively exploited?

CVE-2025-15497 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 20.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-15497?

CVE-2025-15497 has a CVSS v3 base score of 3.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 0.0.

How do I remediate CVE-2025-15497?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-15497, 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

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CVE-2025-15497

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-15497?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)