CVE-2026-63077Critical· 9.8▾ Hadal⚠ Exploited in the wildPoC availableIn JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol
▾ Hadal zone — Critical and actively exploited (CISA KEV / 0day)
impact 53.9 · likelihood 18.7 · exploitation 25 · ransomware 5
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 3 sources. Availability, not in-the-wild use.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Sep 23.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Federal remediation due Aug 8, 2026
Last analysed / modified upstream
87%
87% → 94%
7 GitHub repos · Metasploit ×1 · Nuclei ×1 (last check)
Added to the CISA catalog on Aug 5, 2026. Federal remediation due Aug 8, 2026. View catalog ↗
In JetBrains TeamCity before 2026.1.3, 2025.11.7 unauthenticated remote code execution was possible via the agent polling protocol
TeamCity < 2026.1.3, 2025.11.7Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-111094High· 8.1In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 remote code execution via a whitelist bypass in the build messages protocol was possible
CVE-2026-111095High· 8.0In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 stored XSS in the classic project overview was possible
CVE-2026-111096Medium· 6.7In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 stored XSS in the classic build log was possible
CVE-2026-106218High· 8.8In JetBrains TeamCity before 2026.1.3 2025.11.7 kotlin DSL sandbox escape leading to RCE on the server was possible
CVE-2026-106219Medium· 6.5In JetBrains TeamCity before 2026.2.1 missing validation of Git submodule URLs allowed reading local repositories on the server
CVE-2026-100254High· 8.8In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 authenticated users could execute commands on Windows servers via CRLF injection in Pipeline Git connection settings