What is CVE-2025-66524?

CVE-2025-66524 is a high-severity vulnerability in Apache Nifi, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2025-12-19.

How severe is CVE-2025-66524?

High severity. CVSS v3 base score is 8.8 out of 10.

Deserialization in Apache Nifi

CVE-2025-66524

Apache NiFi 1.20.0 through 2.6.0 include the GetAsanaObject Processor, which requires integration with a configurable Distribute Map Cache Client Service for storing and retrieving state information. The GetAsanaObject Processor used gener…

Vulnerability class: Insecure Deserialization

EPSS: 0.004 (35.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Apache Nifi — versions 2.7.0
Apache Software Foundation Nifi — versions 1.20.0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

security@apache.org (vendor-advisory, Mailing List, Issue Tracking, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)

Frequently asked questions

What is CVE-2025-66524?: CVE-2025-66524 is a high-severity vulnerability in Apache Nifi, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2025-12-19.
How severe is CVE-2025-66524?: High severity. CVSS v3 base score is 8.8 out of 10.