What is CVE-2026-24186?

CVE-2026-24186 is a high-severity vulnerability in Apple macOS, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-04-28.

How severe is CVE-2026-24186?

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

Deserialization in Apple macOS

CVE-2026-24186

NVIDIA FLARE SDK contains a vulnerability in FOBS, where an attacker may cause deserialization of untrusted data by sending a malicious FOBS- encoded message. A successful exploit of this vulnerability might lead to code execution.

Vulnerability class: Insecure Deserialization

Published 2026-04-28 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.005 (38.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Apple macOS
Linux Kernel
NVIDIA Flare Sdk — versions All versions prior to 2.7.2
NVIDIA Nvflare

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

nvd.nist.gov/vuln/detail/CVE-2026-24186 (US Government Resource)
nvidia.custhelp.com/app/answers/detail/a_id/5819 (Vendor Advisory)
www.cve.org/CVERecord (Third Party Advisory)

Frequently asked questions

What is CVE-2026-24186?: CVE-2026-24186 is a high-severity vulnerability in Apple macOS, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-04-28.
How severe is CVE-2026-24186?: High severity. CVSS v3 base score is 8.8 out of 10.