CVE-2026-67864

Status: DeferredHigh (7.5)—

An issue in open62541 v.1.5.5 and before allows a remote attacker to cause a denial of service via the NodeManagement type-instantiation logic component

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base score: 7.5

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.76%
Percentile among all scored CVEs: 54
Score date: 10/5/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1190 Exploit Public-Facing Applicationinitial access85 %
Primary impactT1499.004 Application or System Exploitationimpact80 %

Vector CVSS AV:N/PR:N/UI:N indica explotación remota sin privilegios (T1190). CWE-400 (Uncontrolled Resource Consumption) y descripción de DoS apuntan a T1499.004 (Application Exhaustion).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Filter Network Traffic Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Application Isolation and Sandboxing

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Open62541 — Open62541^AI

CWEs

CWE-400

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2026-67864",
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          "role": "CISA Coordinator",
          "options": [
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              "automatable": "yes"
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          "version": "2.0.3",
          "timestamp": "2026-08-06T14:07:01.027549Z"
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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  "published": "2026-08-05T22:17:07.680",
  "references": [
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      "url": "https://github.com/open62541/open62541/blob/v1.5.5/examples/ci_server.c",
      "source": "cve@mitre.org"
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    {
      "url": "https://github.com/open62541/open62541/blob/v1.5.5/plugins/ua_accesscontrol_default.c",
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      "value": "An issue in open62541 v.1.5.5 and before allows a remote attacker to cause a denial of service via the NodeManagement type-instantiation logic component"
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  ],
  "lastModified": "2026-08-31T19:33:11.197",
  "sourceIdentifier": "cve@mitre.org"
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