Low severity · published Jul 15, 2026
CVE-2026-40955
Integer underflow vulnerability in Secure Access clients
3.7
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
Secure Access · Absolute Security
before 14.55 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-40955
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-40955
Vendor Advisory
https://www.absolute.com/platform/security-information/vulnerability-archive/cve-2026-40955
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