A vulnerability was found in JetBrains TeamCity and classified as problematic. This issue affects some unknown processing of the component Username Handler. The manipulation leads to missing authorization.
The identification of this vulnerability is CVE-2025-52878. The attack may be initiated remotely. There is no exploit available.
It is recommended to upgrade the affected component.
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CVE-2025-52878 | JetBrains TeamCity up to 2025.03.2 Username authorization
A vulnerability was found in JetBrains TeamCity and classified as problematic. This issue affects some unknown processing of the component Username Handler. The manipulation leads to missing authorization. The identification of this…
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IoC Intelligence (1 Indikatoren)
CVE-2025-52878
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title: Detect Exploitation - CVE-2025-52878 | JetBrains TeamCity up to 2025.03.2 Username authorization
id: 40404985-a4a3-4e42-9a6f-07c003b45577
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
- https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-24
logsource:
category: network_connection
product: any
detection:
selection:
CommandLine|contains:
- 'exploit'
condition: selection
falsepositives:
- Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
- attack.initial_accessrule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-24"
description = "YARA Signature for "
strings:
$str = "CVE-2025-52878 | JetBrains Tea" ascii wide
condition:
any of them
}INFRASTRUCTURE BLAST RADIUS & EXPOSURE
Live-Vektor: LOCAL
LOCALIZED
Perimeter & Ingress
Geringes Risiko
Lateral Pivot & AD
GEFÄHRDET (80%)
Crown Jewels & DB
Geringes Risiko
Supply Chain Reach
Geringes Risiko
tsecurity.de Cognitive Threat RAG
Fokus-Vektor:
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich CVE-2025-52878 | JetBrains TeamCity up t.... Basierend auf 368k Vektor-Korrelationen werden sofortige Isolationsmaßnahmen für betroffene Endpunkte empfohlen.
🛡️ Angriffsfläche & Exposure
Netzwerk/Remote-Zugriff ohne Vorauthentifizierung möglich.
⚡ Empfohlene Sofortmaßnahmen
- 1. Perimeter-Inspektion: Relevante Portfreigaben und exponierte Endpunkte unverzüglich scannen.
- 2. Patch-Applikation: Hersteller-Hotfix einspielen oder betroffene Daemons in isolierte DMZ-Segmente überführen.
- 3. Telemetrie & EDR-Alerts: Prozessaufrufe und Child-Processes auf anomale Shell-Spawns überwachen.
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