🛡️ AZL-6763 — ntfs-3g (CVE-2021-39258)

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

• Attack vector: Local — a local account, shell or session on the host is needed.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: Low — an ordinary user account is enough.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: High — total loss, or loss the attacker controls.
• Availability impact: High — total loss, or loss the attacker controls.

Affected software

AZL-6763 is recorded against 1 package.

• ntfs-3g (fixed in 2021.8.22-1)

Timeline and source

Published on 7 September 2021 and last revised on 21 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Web)

Other advisories for this package

ntfs-3g has other advisories on record. If you are patching this one, these are worth checking on the same host:

• OESA-2026-3108 (8.0 High, published 24 Jul 2026)
• USN-8554-1 (published 16 Jul 2026)
• DEBIAN-CVE-2026-42617 (published 15 Jul 2026)
• UBUNTU-CVE-2026-46569 (published 15 Jul 2026)
• DEBIAN-CVE-2026-56135 (published 15 Jul 2026)
• DEBIAN-CVE-2026-42616 (published 15 Jul 2026)
• UBUNTU-CVE-2026-42618 (published 15 Jul 2026)
• DEBIAN-CVE-2026-46572 (published 15 Jul 2026)

Details

Affected Packages

References