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Vulnerability record · CVE-2025-55067 · published 23 October 2025

CVE-2025-55067: Integer overflow vulnerability

The TLS4B ATG system is vulnerable to improper handling of Unix time values that exceed the 2038 epoch rollover. When the system clock reaches January 19, 2038, it resets to December 13, 1901, causing authentication failures and disrupting core system functionalities such as login access, history visibility, and leak detection termination. This vulnerability could allow an attacker to manipulate the system time to trigger a denial of service (DoS) condition, leading to administrative lockout, operational timer failures, and corrupted log entries.

7.1 CVSS 4.0 High EPSS 0.45% · top 63.1% CWE-190 · Integer overflow Deferred
7.1CVSS 4.0 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

The TLS4B ATG system is vulnerable to improper handling of Unix time values that exceed the 2038 epoch rollover. When the system clock reaches January 19, 2038, it resets to December 13, 1901, causing authentication failures and disrupting core system functionalities such as login access, history visibility, and leak detection termination. This vulnerability could allow an attacker to manipulate the system time to trigger a denial of service (DoS) condition, leading to administrative lockout, operational timer failures, and corrupted log entries.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2025/icsa-25-296-03.json
https://www.cisa.gov/news-events/ics-advisories/icsa-25-296-03
https://www.veeder.com/us/network-security-reminder

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Source: NIST National Vulnerability Database (record CVE-2025-55067), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.