Coordinated Grafana Exploitation Attempts on 28 September

GreyNoise identified a significant, coordinated surge in exploitation attempts targeting CVE-2021-43798, a critical path traversal vulnerability within Grafana instances, on September 28. This vulnerability allows attackers to perform arbitrary file reads, potentially leading to unauthorized access to sensitive configuration files or credentials. All observed source IPs associated with these attempts were classified as malicious, indicating a widespread scanning or exploitation campaign rather than isolated incidents. While no specific threat actor group or malware family has been attributed to this activity, the volume suggests automated tooling leveraging known exploits. Organizations utilizing Grafana should immediately verify their instances are patched against CVE-2021-43798 to prevent unauthorized file access. Monitoring for unusual file access patterns and restricting public-facing exposure of Grafana dashboards are recommended mitigation strategies to reduce the risk of compromise during such coordinated exploitation waves.

GreyNoise observed a sharp one-day surge of exploitation attempts targeting CVE-2021-43798 — a Grafana path traversal vulnerability that enables arbitrary file reads. All observed IPs are classified as malicious.

GreyNoise identified a significant, coordinated surge in exploitation attempts targeting CVE-2021-43798, a critical path traversal vulnerability within Grafana instances, on September 28. This vulnerability allows attackers to perform arbitrary file reads, potentially leading to unauthorized access to sensitive configuration files or credentials. All observed source IPs associated with these attempts were classified as malicious, indicating a widespread scanning or exploitation campaign rather than isolated incidents. While no specific threat actor group or malware family has been attributed to this activity, the volume suggests automated tooling leveraging known exploits. Organizations utilizing Grafana should immediately verify their instances are patched against CVE-2021-43798 to prevent unauthorized file access. Monitoring for unusual file access patterns and restricting public-facing exposure of Grafana dashboards are recommended mitigation strategies to reduce the risk of compromise during such coordinated exploitation waves. GreyNoise observed a sharp one-day surge of exploitation attempts targeting CVE-2021-43798 — a Grafana path traversal vulnerability that enables arbitrary file reads. All observed IPs are classified as malicious. GreyNoise observed a sharp one-day surge of exploitation attempts targeting CVE-2021-43798 — a Grafana path traversal vulnerability that enables arbitrary file reads. All observed IPs are classified as malicious.