How severe is CVE-2026-40951?

CVE-2026-40951 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-40951 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40951?

CVE-2026-40951 affects Absolute Secure Access. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40951?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-40951 have an EU (EUVD) identifier?

Yes. CVE-2026-40951 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26431.

When was CVE-2026-40951 published?

CVE-2026-40951 was published on 2026-04-30 and last updated on 2026-06-17.

CVE-2026-40951

CVE-2026-40951 is a medium-severity vulnerability in Absolute Secure Access with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v4: 6.8
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26431
Weakness: CWE-400
Affected product: Absolute Secure Access
Published: 2026-04-30
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-40951?: 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.
How severe is CVE-2026-40951?: CVE-2026-40951 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-40951 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40951?: CVE-2026-40951 affects Absolute Secure Access. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40951?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-40951 have an EU (EUVD) identifier?: Yes. CVE-2026-40951 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26431.
When was CVE-2026-40951 published?: CVE-2026-40951 was published on 2026-04-30 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:absolute:secure_access:*:*:*:*:*:*:*:*

More vulnerabilities in Absolute Secure Access

CVE-2026-33447 — Critical (CVSS 9.8): CVE-2026-33447 is a buffer overflow in a message parsing function of the Secure Access client prior to 14.50.…
CVE-2026-33446 — Critical (CVSS 9.8): CVE-2026-33446 is a buffer overflow in the authentication sub-system of the Secure Access client prior to 14.50.…
CVE-2025-49084 — Critical (CVSS 9.1): CVE-2025-49084 is a vulnerability in the management console of Absolute Secure Access prior to version 13.56. Attackers…
CVE-2026-33451 — High (CVSS 7.8): CVE-2026-33451 is an arbitrary read/write vulnerability in the Secure Access Windows client prior to 14.50. Attackers…
CVE-2026-33449 — High (CVSS 7.5): CVE-2026-33449 is a buffer overflow in a message handling function of the Secure Access client prior to 14.50.…
CVE-2026-0517 — High (CVSS 7.5): CVE-2026-0517 is a denial-of-service vulnerability in versions of Secure Access Server prior to 14.20. An attacker can…

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