How severe is CVE-2026-5536?

CVE-2026-5536 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-5536 being actively exploited?

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

What products are affected by CVE-2026-5536?

CVE-2026-5536 affects Tensoropera Fedml. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5536?

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-2026-5536 have an EU (EUVD) identifier?

Yes. CVE-2026-5536 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19021.

When was CVE-2026-5536 published?

CVE-2026-5536 was published on 2026-04-05 and last updated on 2026-06-17.

CVE-2026-5536

CVE-2026-5536 is a high-severity vulnerability in Tensoropera Fedml with a CVSS 3.x base score of 7.3. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
CVSS v4: 6.9
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19021
Weakness: CWE-20
Affected product: Tensoropera Fedml
Published: 2026-04-05
Last modified: 2026-06-17

Description

A weakness has been identified in FedML-AI FedML up to 0.8.9. Affected is the function sendMessage of the file grpc_server.py of the component gRPC server. Executing a manipulation can lead to deserialization. The attack may be performed from remote. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-5536?: A weakness has been identified in FedML-AI FedML up to 0.8.9. Affected is the function sendMessage of the file grpc_server.py of the component gRPC server. Executing a manipulation can lead to deserialization. The attack may be performed from remote. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-5536?: CVE-2026-5536 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-5536 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5536?: CVE-2026-5536 affects Tensoropera Fedml. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5536?: 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-2026-5536 have an EU (EUVD) identifier?: Yes. CVE-2026-5536 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19021.
When was CVE-2026-5536 published?: CVE-2026-5536 was published on 2026-04-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tensoropera:fedml:*:*:*:*:*:*:*:*

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