CVE-2026-84790

waiting for further signals

EUVD-2026-100750 ↗

no check availablenot proven exploitable

cve.orgpublic pockev

OpenVPN >= 2.7_alpha1, <= 2.7.7

CWE-290 Authentication Bypass by Spoofing

ETK-2026-1524, permanent identifier

cvss7.6cna vendorCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

7d 04h 35msince last run

27mAI analysis

timeline

0 = cve.org publication

trigger signal (cve.org) +0hwaiting for further signals+3h31m

+2h

+6h

+8h

+10h

+12h

description

OpenVPN 2.7_alpha1 through 2.7.7 can incorrectly verify certificate subject identities. An authenticated remote user who can present a specially formed certificate may impersonate another identity when certificate-subject name verification is used.

mitigation

Upgrade OpenVPN to version 2.7.8 or later. Until upgrading, restrict certificate issuance and access to VPN authentication endpoints to trusted users.

check

exploit

automation

contextual

auth required

yes, low privileges

EPSS

0.22%11th percentile

agent run time

27m

cve.org record, t = 0

2026-10-13 21:39Z

Δ to public poc

–

Δ to kev

–

outcome

Contextual: an exploit technique exists, but no deterministic check could cover this one.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

2026-10-13 21:39Z
cve_org: trigger signal, started the run
https://www.cve.org/CVERecord?id=CVE-2026-84790

this entry in the feed

GET /api/v1/feed/CVE-2026-84790

{
  "etk_id": "ETK-2026-1524",
  "cve_id": "CVE-2026-84790",
  "display_id": "CVE-2026-84790",
  "ghsa_id": null,
  "euvd_id": "EUVD-2026-100750",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Certificate subject identity impersonation in OpenVPN",
  "summary": "OpenVPN 2.7_alpha1 through 2.7.7 can incorrectly verify certificate subject identities. An authenticated remote user who can present a specially formed certificate may impersonate another identity when certificate-subject name verification is used.",
  "mitigation": "Upgrade OpenVPN to version 2.7.8 or later. Until upgrading, restrict certificate issuance and access to VPN authentication endpoints to trusted users.",
  "vendor": "OpenVPN",
  "product": "OpenVPN",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 2.7_alpha1, <= 2.7.7"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "OpenVPN",
      "purl": null
    }
  ],
  "cwes": [
    290
  ],
  "cvss_score": 7.6,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
  "epss_score": 0.0022,
  "epss_percentile": 0.1142,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 27.352985966666665,
  "t0_at": "2026-10-13T21:39:05.221000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-13T21:39:05.221000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-13T21:39:05.221000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-84790"
    }
  }
}

published 2026-10-14 00:42Z
last change 2026-10-21 04:45Z

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