CVE-2026-40851

HIGHNVD 8.48.4—Trending — 3 sources updated this week

8.4

A local attacker can perform a confusion attack on the cfgparser via a specially crafted file on an USB stick leading to code execution. This can result in a total loss of confidentiality, integrity and availability.

CVSS v3: 8.4
EG Score: 8.4(high)
EPSS: 7.8%
KEV: Not listed

Published

May 27, 2026

Last Modified

May 27, 2026

Advisory Details (1)

Auto-updated Jun 3, 2026

No patch confirmed yet.

generic

MB connect line: Multiple vulnerabilities in mbNET/mbNET.rokey/mbNET.mini

https://www.certvde.com/en/advisories/VDE-2026-054/

Vendor Advisories for CVE-2026-40851(1)

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

GHSA-hcr2-wfhw-2h9m
GitHub Security AdvisoriesHigh
A local attacker can perform a confusion attack on the cfgparser via a specially crafted file on...

Weakness Classification(1)

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

CWE-1287

Data Freshness Timeline

(refreshed 20× 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.

2026-06-03 22:42 UTCEG score recompute
2026-06-03 22:42 UTCGHSA enrichment
2026-06-03 11:13 UTCEG score recompute
2026-06-03 11:13 UTCGHSA enrichment
2026-06-02 23:44 UTCEG score recompute
2026-06-02 23:44 UTCGHSA enrichment
2026-06-02 20:13 UTCepss_batch
2026-06-02 12:15 UTCEG score recompute
2026-06-02 12:15 UTCGHSA enrichment
2026-06-02 00:47 UTCEG score recompute
2026-06-02 00:47 UTCGHSA enrichment
2026-06-01 13:52 UTCepss_batch
2026-06-01 13:52 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:18 UTCEG score recompute
2026-06-01 13:18 UTCGHSA enrichment
2026-06-01 01:49 UTCEG score recompute
2026-06-01 01:49 UTCGHSA enrichment
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch

Frequently asked(5)

What is CVE-2026-40851?

CVE-2026-40851 is a high vulnerability published on May 27, 2026. A local attacker can perform a confusion attack on the cfgparser via a specially crafted file on an USB stick leading to code execution. This can result in a total loss of confidentiality, integrity and availability.

When was CVE-2026-40851 disclosed?

CVE-2026-40851 was first published in the National Vulnerability Database on May 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-40851 actively exploited?

CVE-2026-40851 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-40851?

CVE-2026-40851 has a CVSS v3 base score of 8.4 (NVD).

How do I remediate CVE-2026-40851?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40851, 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-2026-40851

📅 Published

🔄 Last Modified

📋 Advisory Details (1)