Medium severity · published Aug 13, 2026
CVE-2026-55402
CVE-2026-55402 is an out of bounds read vulnerability in Secure Access servers prior to version 14.57
5.9
CVSS
0.4%
EPSS
No
On KEV
Description
CVE-2026-55402 is an out of bounds read vulnerability in Secure Access
servers prior to version 14.57. Attackers with an ‘in the middle’
position can send specially crafted data to a server causing a
persistent denial of service.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% 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 14.57 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55402
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-55402
Vendor Advisory
https://www.absolute.com/platform/security-information/vulnerability-archive/cve-2026-55402
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