HIGH

CVE-2026-100255

CVSS v3

8.1

HIGH

EPSS Score

0.4 %

exploit probability, as of 2026-10-01

CISA KEV

known exploited

Exploitation

—

SSVC status

Description

In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 administrator account takeover was possible via password reset

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2026-09-30
Last Modified: 2026-10-01

Frequently asked questions

What is CVE-2026-100255?

In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 administrator account takeover was possible via password reset

Is CVE-2026-100255 actively exploited?

Active exploitation of CVE-2026-100255 has not been confirmed. Its EPSS score was 0.4% on 2026-10-01, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-100255?

CVE-2026-100255 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Is CVE-2026-100255 affecting your environment?

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