CVE-2026-55401: Vulnerability in Absolute Security Secure Access
CVE-2026-55401 is a null dereference vulnerability in the load-balancing subsystem of Absolute Security's Secure Access servers prior to version 14.57. An unauthenticated attacker can send a specially crafted packet to a Secure Access server with load balancing enabled, causing the internal load balancer to crash. Despite the crash, the server continues to accept connections and can still issue failover to connected clients. The vulnerability has a medium severity score of 6.9 (CVSS 4.0).
AI Analysis
Technical Summary
This vulnerability (CVE-2026-55401) affects the load-balancing subsystem of Absolute Security Secure Access servers before version 14.57. It is a null dereference issue that can be triggered by an unauthenticated attacker sending a crafted packet, resulting in the internal load balancer crashing. The server remains operational in terms of accepting connections and failover capability after the attack.
Potential Impact
The impact is limited to causing the internal load balancer to crash, which may affect load balancing functionality temporarily. The server remains operational and continues to accept connections and perform failover, so there is no complete denial of service. No privilege escalation or data compromise is indicated.
Mitigation Recommendations
A fix is available in Secure Access version 14.57. Users should upgrade to version 14.57 or later to remediate this vulnerability. No other mitigation or workaround is indicated.
CVE-2026-55401: Vulnerability in Absolute Security Secure Access
Description
CVE-2026-55401 is a null dereference vulnerability in the load-balancing subsystem of Absolute Security's Secure Access servers prior to version 14.57. An unauthenticated attacker can send a specially crafted packet to a Secure Access server with load balancing enabled, causing the internal load balancer to crash. Despite the crash, the server continues to accept connections and can still issue failover to connected clients. The vulnerability has a medium severity score of 6.9 (CVSS 4.0).
CVSS v4.0
Score 6.9medium
Affected software
Absolute Security
Secure Access
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-55401) affects the load-balancing subsystem of Absolute Security Secure Access servers before version 14.57. It is a null dereference issue that can be triggered by an unauthenticated attacker sending a crafted packet, resulting in the internal load balancer crashing. The server remains operational in terms of accepting connections and failover capability after the attack.
Potential Impact
The impact is limited to causing the internal load balancer to crash, which may affect load balancing functionality temporarily. The server remains operational and continues to accept connections and perform failover, so there is no complete denial of service. No privilege escalation or data compromise is indicated.
Mitigation Recommendations
A fix is available in Secure Access version 14.57. Users should upgrade to version 14.57 or later to remediate this vulnerability. No other mitigation or workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Absolute
- Date Reserved
- 2026-06-16T21:26:37.698Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a7df06abf8831d53973fe2c
Added to database: 08/13/2026, 16:27:22 UTC
Last enriched: 09/13/2026, 13:03:38 UTC
Last updated: 09/27/2026, 01:47:43 UTC
Views: 84
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