CVE-2021-46790

HIGHNVD 7.89.8▲

7.8

ntfsck in NTFS-3G through 2021.8.22 has a heap-based buffer overflow involving buffer+512*3-2. NOTE: the upstream position is that ntfsck is deprecated; however, it is shipped by some Linux distributions.

CVSS v3: 7.8
EG Score: 9.8(medium)
EPSS: 13.0%
KEV: Not listed

Published

May 2, 2022

Last Modified

November 21, 2024

References (14)

cve@mitrehttp://www.openwall.com/lists/oss-security/2022/05/26/1
cve@mitrehttps://github.com/tuxera/ntfs-3g/issues/16
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7JPX6OUCQKZX4PN5DQPVDUFZCOOZUX7Z/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ECDCISL24TYH4CTDFCUVF24WAKRSYF7F/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FAXFYIJWT5SHHRNPOJETM77EIMJ6ZP6I/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEXHDCUSLJD2HSPMAAVZ5AWMPUOG6UI7/
cve@mitrehttps://www.debian.org/security/2022/dsa-5160
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2022/05/26/1
af854a3a-2127-422b-91ae-364da2661108https://github.com/tuxera/ntfs-3g/issues/16
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7JPX6OUCQKZX4PN5DQPVDUFZCOOZUX7Z/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ECDCISL24TYH4CTDFCUVF24WAKRSYF7F/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FAXFYIJWT5SHHRNPOJETM77EIMJ6ZP6I/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEXHDCUSLJD2HSPMAAVZ5AWMPUOG6UI7/
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5160

Patch Availability(4)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	ntfs-3g-dev (1:2017.3.23-2ubuntu0.18.04.4) @ bionic	2026-05-23	ubuntu
ubuntu	ntfs-3g-dev (1:2015.3.14AR.1-1ubuntu0.3+esm2) @ xenial	2026-05-23	ubuntu
redhat	virt:rhel-8080020230410211546.fd72936b	2023-05-16	redhat
redhat	libguestfs-winsupport-0:9.2-1.el9	2023-05-09	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-787Out-of-bounds Write

All Vendor Advisories

(5)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-07 18:46 UTCOSV refresh
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore

Frequently asked(5)

What is CVE-2021-46790?

CVE-2021-46790 is a high vulnerability published on May 2, 2022. ntfsck in NTFS-3G through 2021.8.22 has a heap-based buffer overflow involving buffer+512*3-2. NOTE: the upstream position is that ntfsck is deprecated; however, it is shipped by some Linux distributions.

When was CVE-2021-46790 disclosed?

CVE-2021-46790 was first published in the National Vulnerability Database on May 2, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-46790 actively exploited?

CVE-2021-46790 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-46790?

CVE-2021-46790 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8.

How do I remediate CVE-2021-46790?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-46790, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-46790

Explore →

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CVE-2021-46790

Published

Last Modified

References (14)

Patch Availability(4)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-46790?

Same vendor

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CVE-2021-46790

📅 Published

🔄 Last Modified

🔗 References (14)

Patch Availability(4)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-46790?

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References (14)

Frequently asked(5)

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