CVE-2026-2637: iBoysoft NTFS for Mac contains a local privilege escalation vulnerability in its privileged helper daemon ntfs

Routine

HIGH 7.8DOWNGRADE

CVE-2026-2637 is a high-severity flaw (CVSS 7.8) affecting ntfs for mac. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-732
Published	2026-03-03
Last modified	2026-06-17

Publisher (CNA): Fluid Attacks · Vendor: iboysoft

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-03 15:16 UTCPublished CVE record published
2026-06-17 10:31 UTCUpdated Record last modified

iboysoft ntfs for mac DOWNGRADE

Affected: 8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

1. Check installed version

apt-cache policy ntfs-for-mac || rpm -q ntfs-for-mac || ntfs-for-mac --version

2. No fixed release: DOWNGRADE to a release before 8.0 (Debian / Ubuntu)

apt-cache madison ntfs-for-mac sudo apt install ntfs-for-mac=<VERSION_BEFORE_8.0> sudo apt-mark hold ntfs-for-mac

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ntfs-for-mac sudo dnf downgrade ntfs-for-mac-<VERSION_BEFORE_8.0> sudo dnf versionlock add ntfs-for-mac

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-2637?

ntfs for mac: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-2637 being exploited?

CVE-2026-2637 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-2637 affect?

CVE-2026-2637 affects ntfs for mac. Severity is high (CVSS 7.8). 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 che

How urgent is CVE-2026-2637?

Priority 34/100. High severity; Public exploit reference

References

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