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Exploited vulnerability · CISA KEV

Is CVE-2021-43798 exploited? Yes: in CISA KEV since 9 Oct 2025

Gociux · Grafana Labs Grafana · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2021-43798, Grafana Path Traversal Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 9 Oct 2025, 1402 days after it was published. It affects Grafana Labs Grafana. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 9 Oct 2025
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity7.5CVSS 3.1 · high
US federal due30 Oct 2025BOD 22-01 deadline

What it is

Grafana contains a path traversal vulnerability that could allow access to local files.

VendorGrafana Labs (2 exploited CVEs in KEV)
ProductGrafana
VulnerabilityGrafana Path Traversal Vulnerability
WeaknessCWE-22
Published7 Dec 2021
Added to KEV9 Oct 2025
Reported by (CNA)GitHub_M

What to do

  1. Check whether you run it. Look for Grafana in your asset inventory, including appliances and cloud images. Stack check lists every exploited Grafana Labs CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 7 Dec 2021.
  4. Get told next time. Email alerts when CISA adds a CVE for Grafana Labs.

Other exploited CVEs in Grafana

References

Questions

Is CVE-2021-43798 being exploited?

Yes. CISA added CVE-2021-43798 to the Known Exploited Vulnerabilities catalog on 9 Oct 2025, which means there is reliable evidence of exploitation in the wild.

Is CVE-2021-43798 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2021-43798?

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check Grafana Labs's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Grafana and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in October 2025 · Grafana Labs scorecard · act-now radar.

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