CVE-2026-40953 PUBLISHED

Heap overflow in Secure Access clients

Assigner: Absolute
Reserved: 16.04.2026 Published: 15.07.2026 Updated: 16.07.2026

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.

Metrics

CVSS 4.0

CVSS 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
CVSS Score: 6.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	High
User Interaction	None

CVSS 4.0

Product Status

Vendor	Absolute Security
Product	Secure Access
Versions	Default: unaffected affected from 0 to 14.55 (excl.)

References

https://www.absolute.com/platform/security-information/vulnerability-archive/cve-2026-40953