CVE-2026-63077

Exploitation active confirmée

Ajoutée au catalogue CISA KEV le 05/08/2026, correctif exigé avant le 08/08/2026 pour les agences fédérales américaines.

Action requise : Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Description officielle (NVD)

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

Preuves de concept publiques (7)

Dépôts tiers non vérifiés, parfois piégés. Ne les exécutez jamais en production : uniquement dans un environnement de test isolé.

• sfewer-r7/CVE-2026-63077 · ★ 20 · 07/08/2026
  Unauthenticated Remote Code Execution in JetBrains TeamCity (CVE-2026-63077)
• unveiledhistory49/teamcity-cve-2026-63077-remediation · ★ 0 · 30/07/2026
  JetBrains TeamCity On-Premises CVE-2026-63077 Emergency Hardening & Patch Runbook Package
• BoredHackerBlog/teamcity-CVE-2026-63077-pcap · ★ 0 · 08/08/2026
  teamcity teamcity-CVE-2026-63077 exploitation pcap
• AnggaTechI/CVE-2026-63077 · ★ 0 · 08/08/2026
  CVE-2026-63077 — Unauthenticated Remote Code Execution in JetBrains TeamCity via agent polling protocol deserialization. CVSS 9.8 CRITICAL. Mass exploitation tool with interactive shell, multi-threadi
• bakos-sandor-nx/teamcity-cve-2026-63077-remediation · ★ 0 · 19/08/2026
  JetBrains TeamCity On-Premises CVE-2026-63077 Emergency Hardening & Patch Runbook Package
• 0xCyp1337/CVE-2026-63077 · ★ 0 · 04/09/2026
  CVE-2026-63077 - Unauthenticated RCE exploit for JetBrains TeamCity via Agent Polling Deserialization. Supports mass scanning, multi-threading, and interactive shell. For authorized security testing o
• basesixtythree/B63-POC-CVE-2026-63077 · ★ 0 · 22/10/2026
  PoC and verification material for CVE-2026-63077 (JetBrains TeamCity agent-polling deserialization RCE)

Références

• https://www.jetbrains.com/privacy-security/issues-fixed/ , Vendor Advisory
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-63077 , US Government Resource

En bref

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

EPSS : probabilité estimée d'exploitation dans les 30 prochains jours.

Produits concernés

Sources officielles

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