TI-2026-39971 Aliases CVE-2026-55401 GHSA-8pcf-2r89-jjr2

NULL pointer dereference in Absolute Security Secure Access

LOW 37CWE-476Published 2026-08-13 · Updated 2026-08-13

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Low
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-476.

Summary

CVE-2026-55401 is a null dereference vulnerability on the load-balancing sub-system of Secure Access servers prior to 14.57. Attackers can send an unauthenticated packet to a Secure Access server with load balancing enabled, which results in the internal load balancer crashing. After a successful attack, the Secure Access server is still able to accept connections and is still able to issue a failover to connected clients. ‍ https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00402 34th percentileScored 2026-11-07

Fix Fixed Secure Access (Absolute Security): 14.57

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Absolute Security	Secure Access	before 14.57	14.57	Patch available	CNA

Secure Access VendorAbsolute Security Affected before 14.57 Fixed in 14.57 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:absolute:secure_access::::::::	before 14.57	Vulnerable	Absolute Security

cpe:2.3:a:absolute:secure_access:*:*:*:*:*:*:*:* Versions before 14.57 Vulnerable ·Absolute Security

Remediation

Fix · CNA Secure Access (Absolute Security) Fixed in 14.57

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-08-13
Absolute Security Secure Access 14.57
3 records Highest priority Priority LOW 3 LOW
Other records, highest priority first
- TI-2026-39972 Out-of-bounds read in Absolute Security Secure AccessPriority LOW 38
- TI-2026-39970 Integer overflow in Absolute Security Secure AccessPriority LOW 27
Show all 3 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-55401
2026-10-03 Alias added: GHSA-8pcf-2r89-jjr2

References

Advisory 1

https://www.absolute.com/platform/security-information/vulnerability-archive/cve-2026-55401

TI-2026-25841 Memory management vulnerability in Secure Access servers CVSS 4.0HIGH 8.7
TI-2026-39972 Out-of-bounds read in Absolute Security Secure Access CVSS 4.0HIGH 8.7
TI-2026-29603 Privilge misconfiguration in Secure Access installers CVSS 4.0HIGH 8.5
TI-2026-25847 Arbitrary read/write vulnerability in Windows clients prior to 14.50 CVSS 4.0HIGH 8.5
TI-2025-31193 Memory management vulnerability in Absolute Secure Access server versions 9.0 to 13.54 CVSS 4.0HIGH 8.7
TI-2026-29601 Buffer overflow in the Secure Access server prior to 14.50 CVSS 4.0HIGH 7.1

See all 53 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences