CVE-2026-40955 PUBLISHED

Integer underflow vulnerability in Secure Access clients

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

CVE-2026-40955 is an integer underflow vulnerability in the traffic parsing function of Secure Access clients prior to 14.55. Attackers with intimate knowledge of and total control over the tunnel protocol can create a non-persistent DoS against their client.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS Score: 2.1

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

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-2026-40955