VulnerabilityBleeping Computer
9.8 — CRITICAL
JetBrains warns of critical TeamCity remote code execution flaw
JetBrains is warning of a critical authentication bypass vulnerability affecting TeamCity On-Premises that could be exploited to achieve remote code execution. [...]
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
A critical authentication bypass vulnerability (CVE-2026-63077) in JetBrains TeamCity On-Premises allows an attacker with HTTPS access to bypass authentication and execute arbitrary operating system commands, potentially exposing sensitive data and compromising build artifacts.
⚙️Technical Details
💥Impact Assessment
Severity: critical
🛡️Recommended Actions
1Upgrade to TeamCity versions 2025.11.7 or 2026.1.3 as the first option
2Apply a security patch for TeamCity 2017.1+ using a plugin
3Implement additional protective layers on internet-facing TeamCity servers
📦Affected Products
Product Name: TeamCity On-PremisesVersion Range: 2024.03 and newer, 2017.1 through 2018.1
🔐NVD Verified DataVERIFIED
CVE-2026-63077 ↗CVSS 9.8 — CRITICAL
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWeaknesses
CWE-502
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