Vulnerability · Published Jul 15, 2026 · Assigned by Absolute
CVE-2026-40953Heap overflow in Secure Access clients
Medium 6.7
In plain English
A medium-severity out-of-bounds write in Secure Access from Absolute Security. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).
Severity (CVSS 4.0)6.7Medium
Exploit odds (30 days)<0.1%top 99.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Absolute Security | Secure Access | 0 – before 14.55 |
Weakness: CWE-787 · 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