CVE-2026-40951

MEDIUMNVD 5.55.5—

5.5

CVE-2026-40951 is a memory corruption vulnerability on Secure Access Windows clients prior to 14.50. Attackers with local control of the Windows client can send malformed data to an API and trigger a denial of service.

CVSS v3: 5.5
EG Score: 5.5(high)
EPSS: 4.5%
KEV: Not listed

Published

April 30, 2026

Last Modified

May 4, 2026

Advisory Details (1)

Auto-updated Apr 30, 2026

No patch confirmed yet.

generic

CVE-2026-40951 | Absolute Security

https://www.absolute.com/platform/security-information/vulnerability-archive/cve-2026-40951

Weakness Classification(1)

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

CWE-400Uncontrolled Resource Consumption (Denial of Service)

Data Freshness Timeline

(refreshed 16× 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
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 15:00 UTCEG score recompute
2026-05-20 15:00 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-40951?

CVE-2026-40951 is a medium vulnerability published on April 30, 2026. CVE-2026-40951 is a memory corruption vulnerability on Secure Access Windows clients prior to 14.50. Attackers with local control of the Windows client can send malformed data to an API and trigger a denial of service.

When was CVE-2026-40951 disclosed?

CVE-2026-40951 was first published in the National Vulnerability Database on April 30, 2026, with the most recent update on May 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-40951 actively exploited?

CVE-2026-40951 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-40951?

CVE-2026-40951 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2026-40951?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40951, 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-2026-40951

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

CVE-2026-40951 | Absolute Security

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-40951?

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Frequently asked(5)

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