CVE-2026-63077

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

Affected

JetBrains · TeamCity

CVSS v3.1 JETBRAINS

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

89.57% chance of exploitation in the next 30 days, 100th percentile

CISA KEV

added 2026-08-05, used in ransomware campaigns

Nuclei

critical · CWE-502

Published

2026-07-27

Updated

2026-09-23

Proof-of-concept exploits (4)

• sfewer-r7/CVE-2026-6307720★ · 2026-08-07
• BoredHackerBlog/teamcity-CVE-2026-63077-pcap0★ · 2026-08-10
• AnggaTechI/CVE-2026-630770★ · 2026-08-08
• 0xCyp1337/CVE-2026-630770★ · 2026-09-04

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-63077.yaml

Metasploit modules (1)

• rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/jetbrains_teamcity_rc…

Security advisories

• https://www.jetbrains.com/privacy-security/issues-fixed

References

• CVE Record
• NVD entry

Related

• CVE-2023-27532
• CVE-2023-34362
• CVE-2024-51977
• CVE-2024-51978
• CVE-2024-51979
• CVE-2024-51980