CVE-2026-71302

Toptech TMS7 and TopHAT Session Fixation

State: Published
Severity: 7.5 High
Published: Sep 29, 2026
Updated: Sep 30, 2026
Reserved: Aug 10, 2026

Description

The application accepts user-supplied session identifiers and does not regenerate the session ID after authentication. This allows an attacker to predefine a session ID and reuse it after victim authentication, resulting in session takeover.

Scores

CVSS	Score	Vector	Source
4.0	7.5 High	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N	icscert
3.1	7.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L	icscert

Weaknesses

CWE-384

Affected Products

Product	Versions
TMS7Toptech Systems	7.6.3Affected 7.8Not affected
TopHATToptech Systems	7.6.3Affected 7.8Not affected

References

https://www.toptech.com/blog/tms7-version-7-8-strengthens-security
https://www.cisa.gov/news-events/ics-advisories/icsa-26-272-02
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-272-02.json

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