CVE-2026-55402: CVE-2026-55402 is an out of bounds read vulnerability in Secure Access servers prior to version 14.57

Q: How do I fix CVE-2026-55402?

secure access: upgrade to 14.57. Exact commands for each OS are on this page.

Q: Is CVE-2026-55402 being exploited?

CVE-2026-55402 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-55402 affect?

CVE-2026-55402 affects secure access. Severity is medium (CVSS 5.9). 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.

Q: How urgent is CVE-2026-55402?

Priority 34/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.9REMOTEUPGRADE

CVE-2026-55402 is a medium-severity flaw (CVSS 5.9) affecting secure access. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-125
Published	2026-08-13
Last modified	2026-09-04

Publisher (CNA): NetMotion Software · Vendor: absolute

Last updated 2026-09-04 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-13 17:17 UTCPublished CVE record published
2026-09-04 20:37 UTCUpdated Record last modified

absolute secure access UPGRADE

Affected: < 14.57

Fixed in: 14.57

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy secure-access || rpm -q secure-access || secure-access --version

2. UPGRADE to 14.57 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade secure-access

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade secure-access

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-55402?

secure access: upgrade to 14.57. Exact commands for each OS are on this page.

Is CVE-2026-55402 being exploited?

CVE-2026-55402 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-55402 affect?

CVE-2026-55402 affects secure access. Severity is medium (CVSS 5.9). 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.

How urgent is CVE-2026-55402?

Priority 34/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-33446 CRITICAL 9.8 UPGRADE CVE-2026-33446 is a buffer overflow in the authentication sub-system of the Secure Access client prior to 14.
CVE-2026-33449 HIGH 7.5 UPGRADE CVE-2026-33449 is a buffer overflow in a message handling function of the Secure Access client prior to 14.50
CVE-2026-33451 HIGH 7.8 UPGRADE CVE-2026-33451 is an arbitrary read/write vulnerability in the Secure Access Windows client prior to 14.50
CVE-2026-40950 MEDIUM 6.5 UPGRADE CVE-2026-40950 is a buffer overflow vulnerability in the Secure Access server prior to 14.50
CVE-2026-33448 LOW 3.3 UPGRADE CVE-2026-33448 is a format string vulnerability in the logging subsystem of Secure Access client for MacOS pr

References

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