CVE-2026-40953

Heap overflow in Secure Access clients

Published Jul 15, 2026 CVSS 4.0 · 6.7 Medium EPSS < 1% KEV · Not listed
Description
CVE-2026-40953 is a heap overflow in the
certificate parsing function of Secure Access clients prior to 14.55. Attackers
with local access and administrator permissions can create a denial of service
attack against the client over which they have control.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Absolute
Absolute secure Access
Vendors & Products Absolute
Absolute secure Access
Type Values Removed Values Added
Weaknesses CWE-787
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description CVE-2026-40953 is a heap overflow in the certificate parsing function of Secure Access clients prior to 14.55. Attackers with local access and administrator permissions can create a denial of service attack against the client over which they have control.
Title Heap overflow in Secure Access clients
References
Metrics cvssV4_0

{'score': 6.7, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Absolute
Published
Updated
Jul 16, 2026, 1:15 PM
Reserved
Apr 16, 2026, 12:19 AM
Status
Modified
Published
Jul 15, 2026, 8:16 PM
Modified
Oct 24, 2026, 9:10 PM