CVE-2026-40955: CVE-2026-40955 is an integer underflow vulnerability in the traffic parsing function of Secure Access clients

Q: How do I fix CVE-2026-40955?

secure access: upgrade to 14.55. Exact commands for each OS are on this page.

Q: Is CVE-2026-40955 being exploited?

CVE-2026-40955 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-2026-40955 affect?

CVE-2026-40955 affects secure access. Severity is low (CVSS 3.7). 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 ag

Q: How urgent is CVE-2026-40955?

Priority 24/100. Remotely exploitable, no login, no user action

Routine

LOW 3.7REMOTEUPGRADE

CVE-2026-40955 is a low-severity flaw (CVSS 3.7) affecting secure access. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	3.7 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-191
Published	2026-07-15
Last modified	2026-10-24

Publisher (CNA): NetMotion Software · Vendor: absolute

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-15 20:16 UTCPublished CVE record published
2026-10-24 21:10 UTCUpdated Record last modified

absolute secure access UPGRADE

Affected: < 14.55

Fixed in: 14.55

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 14.55 (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-2026-40955?

secure access: upgrade to 14.55. Exact commands for each OS are on this page.

Is CVE-2026-40955 being exploited?

CVE-2026-40955 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-2026-40955 affect?

CVE-2026-40955 affects secure access. Severity is low (CVSS 3.7). 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 ag

How urgent is CVE-2026-40955?

Priority 24/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-40957 HIGH 7.5 UPGRADE o CVE-2026-40957 is a frameable content vulnerability in the Secure Access server login page prior to 14.55
CVE-2026-33445 MEDIUM 5.9 UPGRADE CVE-2026-33445 is a memory management vulnerability in Secure Access servers prior to 14.55
CVE-2026-33443 MEDIUM 5.9 UPGRADE CVE-2026-33443 is a memory management error in Secure Access servers prior to 14.55
CVE-2026-40952 HIGH 7.8 UPGRADE CVE-2026-40952 is a privilege misconfiguration in the Secure Access installer for the Windows client and serve
CVE-2026-40958 LOW 3.7 UPGRADE CVE-2026-40958 is a input validation error in Secure Access clients prior to 14.55

References

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