CVE-2025-3110

HIGHNVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory published 2026-07-08. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 5 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

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

OpenVPN Access Server 2.7.2 through 3.1.0 accepts bare line-feed sequences inside HTTP header values, allowing remote attackers to perform HTTP request smuggling when deployed behind a reverse proxy

CVSS v3
7.5
EG Score
7.5(high)
EPSS
22.6%
KEV
Not listed

Published

July 8, 2026

Last Modified

July 10, 2026

Advisory Details (1)

Auto-updated Jul 8, 2026
No patch confirmed yet.
generic

Access Server 3.2 Release Notes and Version Updates

https://openvpn.net/as-docs/as-3-2-release-notes.html

Vendor Advisories for CVE-2025-3110(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 15× 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. 2026-07-11 19:00 UTCEG score recompute
  2. 2026-07-11 19:00 UTCGHSA enrichment
  3. 2026-07-11 08:27 UTCEPSS rescore
  4. 2026-07-11 08:27 UTCEPSS rescore
  5. 2026-07-11 06:56 UTCEG score recompute
  6. 2026-07-11 06:55 UTCGHSA enrichment
  7. 2026-07-10 18:51 UTCEG score recompute▲ 0.60
  8. 2026-07-10 18:51 UTCGHSA enrichment
  9. 2026-07-10 18:19 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  10. 2026-07-09 19:09 UTCEPSS rescore
  11. 2026-07-09 19:09 UTCEPSS rescore
  12. 2026-07-09 17:38 UTCEG score recompute
  13. 2026-07-09 17:38 UTCGHSA enrichment
  14. 2026-07-08 16:24 UTCEG score recompute
  15. 2026-07-08 16:24 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2025-3110?
CVE-2025-3110 is a high vulnerability published on July 8, 2026. OpenVPN Access Server 2.7.2 through 3.1.0 accepts bare line-feed sequences inside HTTP header values, allowing remote attackers to perform HTTP request smuggling when deployed behind a reverse proxy
When was CVE-2025-3110 disclosed?
CVE-2025-3110 was first published in the National Vulnerability Database on July 8, 2026, with the most recent update on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-3110 actively exploited?
CVE-2025-3110 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-3110?
CVE-2025-3110 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2025-3110?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-3110, 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-2025-3110

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