CVE-2021-33289: debian debian_linux Out-of-bounds Write

Modified

AliasesUBUNTU-CVE-2021-33289DEBIAN-CVE-2021-33289

Published 07-09-2021Last modified 09-07-2026

Vulnerability summary

CVE-2021-33289 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 42% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

7.8/10

010

High · v3.1 (NVD)

EPSS score

0.49%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 11 · Related 7

DLA-2819-1 DSA-4971-1 MGASA-2022-0001 OPENSUSE-SU-2021:1244-1 OPENSUSE-SU-2021:2971-1 OPENSUSE-SU-2024:11101-1+7 more

Timeline

07-09-2021
PublishedVulnerability first disclosed.
09-07-2026
Last modifiedVulnerability information updated.

Description

In NTFS-3G versions < 2021.8.22, when a specially crafted MFT section is supplied in an NTFS image a heap buffer overflow can occur and allow for code execution.

CVSS metrics

4 scores · 3 sources · 2 versions

v3.17.8v2.06.9

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.49% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian2 products

ntfs-3g< 1:2021.8.22-2
debian_linuxEOL9.0 | 10.0 | 11.0

Fedoraproject1 product

fedoraEOL33 | 35

Tuxera1 product

ntfs-3g< 2021.8.22

Ubuntu1 product

ntfs-3g< 1:2013.1.13AR.1-2ubuntu2+esm1 | < 1:2015.3.14AR.1-1ubuntu0.3+esm1 | < 1:2017.3.23-2ubuntu0.18.04.3 | < 1:2017.3.23AR.3-3ubuntu1.1 | < 1:2017.3.23AR.3-3ubuntu5

4 vendors · 5 products