What is CVE-2026-2637?

CVE-2026-2637 is a high-severity vulnerability in Iboysoft Ntfs, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2026-03-03.

How severe is CVE-2026-2637?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Iboysoft Ntfs

CVE-2026-2637

iBoysoft NTFS for Mac contains a local privilege escalation vulnerability in its privileged helper daemon ntfshelperd. The daemon exposes an NSConnection service that runs as root without implementing any authentication or authorization checks. This issue affects iBoysoft NTFS: 8.0.0.

Published 2026-03-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (7.7th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Iboysoft Ntfs — versions 8.0.0
Iboysoft Ntfs For Mac — versions 8.0

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

fluidattacks.com/advisories/cuarteto (Exploit, Third Party Advisory, third-party-advisory)
iboysoft.com/ntfs-for-mac/ (Product, product)

Frequently asked questions

What is CVE-2026-2637?: CVE-2026-2637 is a high-severity vulnerability in Iboysoft Ntfs, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2026-03-03.
How severe is CVE-2026-2637?: High severity. CVSS v3 base score is 7.8 out of 10.