CVE-2026-55401Network attack vector

Internal load-balancer crash via null pointer dereference

Published Aug 13, 2026 · Updated Aug 13, 2026

Null pointer dereference in Absolute Secure Access servers before 14.57 allows remote attackers to crash the internal load balancer. The load-balancing subsystem dereferences a null pointer while processing an unauthenticated packet, terminating the internal load-balancer process. Load balancing must be enabled; the server continues accepting connections and can fail over connected clients after the crash.

CVSS severity6.9
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Null pointer dereference in Absolute Secure Access servers before 14.57 allows remote attackers to crash the internal load balancer. The load-balancing subsystem dereferences a null pointer while processing an unauthenticated packet, terminating the internal load-balancer process. Load balancing must be enabled; the server continues accepting connections and can fail over connected clients after the crash.

The record

CVE
CVE-2026-55401
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
Absolute Security
Product
Absolute Secure Access
Classifications
T1498
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <14.57

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Absolute Security · Absolute Secure Accessversion=0 <14.57

Published CVSS scores

6.9Absolute SecurityCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1498Network Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo