What is CVE-2025-43915?

CVE-2025-43915 is a medium-severity vulnerability in Linkerd Buoyant, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2025-05-05.

How severe is CVE-2025-43915?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Linkerd Buoyant

CVE-2025-43915

In Linkerd edge releases before edge-25.2.1, and Buoyant Enterprise for Linkerd releases 2.13.0–2.13.7, 2.14.0–2.14.10, 2.15.0–2.15.7, 2.16.0–2.16.4, and 2.17.0–2.17.1, resource exhaustion can occur for Linkerd proxy metrics.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.003 (21.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H.

Affected products

Linkerd Buoyant
Linkerd
N/a — versions n/a

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

cve@mitre.org (Product)
cve@mitre.org (Vendor Advisory)

Frequently asked questions

What is CVE-2025-43915?: CVE-2025-43915 is a medium-severity vulnerability in Linkerd Buoyant, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2025-05-05.
How severe is CVE-2025-43915?: Medium severity. CVSS v3 base score is 6.5 out of 10.