Out of Bounds Read in Secure Access Server

Executive Summary

CVE-2026-55402 is an out-of-bounds read vulnerability in Secure Access servers running versions before 14.57. Attackers with a man-in-the-middle position can exploit this by sending specially crafted data to the server, causing a persistent denial-of-service condition.

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Detection Guidance

Detecting this vulnerability requires checking the version of Secure Access servers. Run 'show version' or 'get system status' on the server to verify if it is running a version prior to 14.57. Monitor network traffic for unusual patterns that may indicate a man-in-the-middle attack.

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Impact Analysis

This vulnerability can lead to a persistent denial-of-service condition, making the server unavailable. It requires low attack complexity and no user interaction, meaning attackers can exploit it remotely with minimal effort.

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Compliance Impact

This vulnerability primarily impacts availability by causing persistent denial-of-service conditions, which could disrupt access to critical systems. While it does not directly expose data, prolonged outages may interfere with compliance requirements for availability in standards like HIPAA or GDPR. However, the provided context does not specify direct impacts on data confidentiality or integrity.

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Mitigation Strategies

Update Secure Access servers to version 14.57 or later to address the out-of-bounds read vulnerability and prevent persistent denial-of-service conditions.

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