What is CVE-2026-47621?

CVE-2026-47621 is a medium-severity vulnerability in Linux Kernel, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.5/10. Published 2026-08-04.

How severe is CVE-2026-47621?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Linux Kernel

CVE-2026-47621

NVIDIA Dynamo for Linux contains a vulnerability where an attacker could cause a race condition in the LoRA manager singleton initialization. A successful exploit of this vulnerability might lead to denial of service and data tampering.

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

Published 2026-08-04 · last modified 2026-10-24.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H.

EPSS exploit prediction

EPSS: 0.004 (35.8th percentile), scored 2026-11-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Linux Kernel
NVIDIA Dynamo — versions 0 to v1.1.0

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

nvd.nist.gov/vuln/detail/CVE-2026-47621 (US Government Resource, Third Party Advisory)
www.cve.org/CVERecord (Third Party Advisory)
github.com/NVIDIA/product-security/tree/main/2026/5842 (Product)

Frequently asked questions

What is CVE-2026-47621?: CVE-2026-47621 is a medium-severity vulnerability in Linux Kernel, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.5/10. Published 2026-08-04.
How severe is CVE-2026-47621?: Medium severity. CVSS v3 base score is 6.5 out of 10.