CRITICAL CISA KEV

CVE-2026-63077

CVSS v3

9.8

CRITICAL

EPSS Score

0.6%

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol

CISA Known Exploited Vulnerability

Date Added: 8/5/2026
Patch Due Date: 8/8/2026
Ransomware Use: Unknown

Technical details

CVSS v3 Vector: 3.1
Published: 7/27/2026
Last Modified: 7/28/2026

Frequently asked questions

What is CVE-2026-63077?

In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol

Is CVE-2026-63077 actively exploited?

Yes. CVE-2026-63077 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 8/8/2026.

What is the CVSS score for CVE-2026-63077?

CVE-2026-63077 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 3.1.

Is CVE-2026-63077 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

Check an IP Search CVEs

Other 2026 vulnerabilities worth triaging

Ranked by exploit probability (EPSS).

Back to CVE Database