CVE-2021-33286

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.46% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 38.0% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-07-09.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-09-07 00:00Z4 YR AGO

Last updated

2026-07-09 00:13Z1 MO AGO

Reserved

2021-05-20

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-787Out-of-bounds WriteBase
• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.2

Document digest

492ea4b16f1e2fa37ac9c950a1636864854c8122c631e40d851a94ef1015602d

• www.openwall.com[oss-security] 20210830 NTFS3G-SA-2021-0001: Multiple buffer overflows in all versions of NTFS-3Ghttp://www.openwall.com/lists/oss-security/2021/08/30/1mailing-list
• github.comhttps://github.com/tuxera/ntfs-3g/security/advisories/GHSA-q759-8j5v-q5jp
• www.debian.orgDSA-4971https://www.debian.org/security/2021/dsa-4971vendor-advisory
• lists.debian.org[debian-lts-announce] 20211116 [SECURITY] [DLA 2819-1] ntfs-3g security updatehttps://lists.debian.org/debian-lts-announce/2021/11/msg00013.htmlmailing-list
• security.gentoo.orgGLSA-202301-01https://security.gentoo.org/glsa/202301-01vendor-advisory