How severe is CVE-2025-55199?

CVE-2025-55199 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-55199 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55199?

CVE-2025-55199 affects Helm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-55199?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-55199 have an EU (EUVD) identifier?

Yes. CVE-2025-55199 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24647.

When was CVE-2025-55199 published?

CVE-2025-55199 was published on 2025-08-14 and last updated on 2026-06-17.

CVE-2025-55199

CVE-2025-55199 is a medium-severity vulnerability in Helm with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-24647
Weakness: CWE-770
Affected product: Helm
Published: 2025-08-14
Last modified: 2026-06-17

Description

Helm is a package manager for Charts for Kubernetes. Prior to version 3.18.5, it is possible to craft a JSON Schema file in a manner which could cause Helm to use all available memory and have an out of memory (OOM) termination. This issue has been resolved in Helm 3.18.5. A workaround involves ensuring all Helm charts that are being loaded into Helm do not have any reference of $ref pointing to /dev/zero.

Frequently asked questions

What is CVE-2025-55199?: Helm is a package manager for Charts for Kubernetes. Prior to version 3.18.5, it is possible to craft a JSON Schema file in a manner which could cause Helm to use all available memory and have an out of memory (OOM) termination. This issue has been resolved in Helm 3.18.5. A workaround involves ensuring all Helm charts that are being loaded into Helm do not have any reference of $ref pointing to /dev/zero.
How severe is CVE-2025-55199?: CVE-2025-55199 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-55199 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55199?: CVE-2025-55199 affects Helm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-55199?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-55199 have an EU (EUVD) identifier?: Yes. CVE-2025-55199 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24647.
When was CVE-2025-55199 published?: CVE-2025-55199 was published on 2025-08-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:*

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