In NTFS-3G before 2026.7.7, a out-of-bounds read exists in ntfs_fix_file_name() in libntfs-3g/reparse.c that allows an attacker to read possibly confidential information in ntfs-3g process memory by crafting a malicious NTFS image. The out-of-bounds read is triggered by a readlink on a corrupted file.
CVE-2026-46571
MEDIUMPre-NVD 5.55.5Trending — 4 sources updated this week
EchelonGraph scoreLOW confidence
This medium-severity CVE scores 5.5 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: cisa-adp
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 5.5Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 5.5
- EG Score
- 5.5MEDIUMlow confidence
- EG Risk
- 25EG Risk 25/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity55% × 45%Exploitation0% × 40%Automatability0% × 15%CISA SSVC: Track at every mission impact level.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
CISA SSVCTrack at every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
October 7, 2026
Last Modified
October 7, 2026
Advisory Details (2)
Auto-updated Oct 7, 2026Patch available. Sources: github.
githubMentions a patch (unverified)
Out-of-bounds read in ntfs_fix_file_name() · Advisory · tuxera/ntfs-3g · GitHub
https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-52gr-j4pv-9pjhgeneric
Releases · tuxera/ntfs-3g · GitHub
https://github.com/tuxera/ntfs-3g/releases#release-2026.7.7Patch Availability(1)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | ntfs-3g-dev (1:2021.8.22-3ubuntu1.4) @ jammy | 2026-10-07 | ubuntu |
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.
All Vendor Advisories
(1)
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 10× in last 7d / 10× 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.
- 2026-10-07 15:30 UTCEG score recompute▲ 5.50
- 2026-10-07 15:29 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
- 2026-10-07 14:49 UTCEG score recompute▼ 5.50
- 2026-10-07 14:49 UTCVendor advisory
- 2026-10-07 14:47 UTCNVD update
- 2026-10-07 14:42 UTCEG score recompute▲ 5.50
- 2026-10-07 14:41 UTCMITRE cvelistV5CVSS v3 → 5.5 · severity → MEDIUM
- 2026-10-07 14:26 UTCNVD update
- 2026-10-07 14:08 UTCEG score recompute
- 2026-10-07 14:06 UTCMITRE cvelistV5first tracked
Related CVEs(same vendor + same CWE)
Same vendor
7 shownubuntu:USN-8554-1
Frequently asked(4)
What is CVE-2026-46571?
CVE-2026-46571 is a medium vulnerability published on October 7, 2026. In NTFS-3G before 2026.7.7, a out-of-bounds read exists in ntfsfixfile_name() in libntfs-3g/reparse.c that allows an attacker to read possibly confidential information in ntfs-3g process memory by crafting a malicious NTFS image. The out-of-bounds read is triggered by a readlink on a corrupted file.
When was CVE-2026-46571 disclosed?
CVE-2026-46571 was first published on October 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-46571?
CVE-2026-46571 has a CVSS v3.1 base score of 5.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-46571?
A fix for CVE-2026-46571 is available: update to the fixed version the vendor names in its advisory.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-46571
Is Your Infrastructure Affected by CVE-2026-46571?
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