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CVE-2025-43915

MEDIUMCVSS 6.5/10EPSS 0.28%

Last modified

CVE-2025-43915 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
6.5/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

EPSS Probability
0.28%

19.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinkerdBuoyant>= 2.13.0, <= 2.13.7
LinkerdBuoyant>= 2.14.0, <= 2.14.10
LinkerdBuoyant>= 2.15.0, <= 2.15.7
LinkerdBuoyant>= 2.16.0, < 2.16.5
LinkerdBuoyant>= 2.17.0, < 2.17.2
LinkerdLinkerd< 25.2.1

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is 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.
How severe is CVE-2025-43915?
CVE-2025-43915 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.
How do I fix CVE-2025-43915?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-43915?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST