Session Fixation in Secomea GateManager Web Server Module

Session fixation vulnerability in Secomea GateManager (webserver module) allows Session Fixation. This issue affects GateManager: 11.5;0, 11.4.625515072:0. Fixed in Version 11.6 or 11.4.626194074 and above

Casky was already ahead

This CVE exploits attack patterns that Casky's 283matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

Session fixation vulnerabilities allow attackers to hijack user sessions by forcing a victim to use a predetermined session identifier. In Secomea GateManager versions 11.5.0 and 11.4.625515072, the webserver module fails to properly regenerate session tokens, enabling attackers to establish a known session before a user authenticates. This creates a critical risk for organizations relying on GateManager for industrial control system (ICS) and operational technology (OT) access management. An attacker who exploits this vulnerability can maintain persistent unauthorized access to critical infrastructure after an administrator authenticates, potentially leading to system manipulation, data theft, or sabotage. With a CVSS score of 8.3, this vulnerability demands immediate patching across all affected deployments.

Casky's 283 matching security skills leverage Claude's extended reasoning to detect the attack patterns associated with this CVE across MITRE ATT&CK techniques TA0004 (Privilege Escalation) and TA0006 (Credential Access). Practitioners using Casky will identify behavioral indicators such as: session tokens that remain constant across authentication boundaries, HTTP response patterns lacking Set-Cookie refresh mechanisms, and authentication flows where pre-session identifiers persist post-login. The platform's skills specifically map CWE-384 session fixation weaknesses, allowing security teams to spot reconnaissance activities (attackers testing session stability), exploitation attempts (forced session reuse), and post-compromise persistence patterns. When reviewing GateManager logs and network traffic, practitioners will receive findings highlighting suspicious session continuity, missing session regeneration events, and potential lateral movement attempts using hijacked administrative sessions—enabling rapid detection before attackers establish foothold in critical infrastructure environments.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

283 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-1758.

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

Access with Stolen Session Cookie

identity access management · low

Run

MITRE ATT&CK Techniques

TA0004 TA0006

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