How severe is CVE-2026-40983?

CVE-2026-40983 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-40983 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-40983?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-40983 have an EU (EUVD) identifier?

Yes. CVE-2026-40983 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35318.

When was CVE-2026-40983 published?

CVE-2026-40983 was published on 2026-06-09 and last updated on 2026-07-06.

CVE-2026-40983

CVE-2026-40983 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. 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-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35318
Weakness: CWE-400
Published: 2026-06-09
Last modified: 2026-07-06

Description

In Micrometer, it is possible for a user to provide specially crafted gRPC requests that may cause a denial-of-service (DoS) condition. Affected versions: Micrometer 1.16.0 through 1.16.5; 1.15.0 through 1.15.11.

Frequently asked questions

What is CVE-2026-40983?: In Micrometer, it is possible for a user to provide specially crafted gRPC requests that may cause a denial-of-service (DoS) condition. Affected versions: Micrometer 1.16.0 through 1.16.5; 1.15.0 through 1.15.11.
How severe is CVE-2026-40983?: CVE-2026-40983 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-40983 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-40983?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-40983 have an EU (EUVD) identifier?: Yes. CVE-2026-40983 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35318.
When was CVE-2026-40983 published?: CVE-2026-40983 was published on 2026-06-09 and last updated on 2026-07-06.

References

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