Google Cloud Service Mesh und Envoy Proxy: Schwachstelle ermöglicht Denial of Service
WID-SEC-2026-2127 · first 30.06.2026 · updated 30.06.2026 · CVSS 7,5
What it is about
Google Cloud Platform (GCP) ist eine Sammlung von Cloud-Computing-Diensten von Google, die Infrastruktur, Datenanalyse, maschinelles Lernen und Entwicklungstools bietet. Unternehmen können dadurch Anwendungen in der Cloud zu aufbauen und skalierbar bereitzustellen. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Google Cloud Service Mesh und Envoy Proxy ausnutzen, um einen Denial of Service Angriff durchzuführen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Denial of Service Angriff durchzuführen
Am I affected?
Affected according to the BSI:
- Google Cloud Platform Envoy Proxy
- Google Cloud Platform in-cluster Cloud Service Mesh <1.29.5-asm.5
- Google Cloud Platform in-cluster Cloud Service Mesh <1.28.9-asm.4
- Google Cloud Platform in-cluster Cloud Service Mesh <1.27.9-asm.9
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Google Cloud Platform in-cluster Cloud Service Mesh 1.29.5-asm.5
- Google Cloud Platform in-cluster Cloud Service Mesh 1.28.9-asm.4
- Google Cloud Platform in-cluster Cloud Service Mesh 1.27.9-asm.9
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- Google Cloud Sicherheitsbulletin vom 2026-06-29 docs.cloud.google.com
- GitHub Security Advisory vom 2026-06-29 github.com
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.