CVE-2018-11727: The libfsntfs_attribute_read_from_mft function in libfsntfs_attribute.c in libfsntfs through 2018-04-20 allows

Q: How do I fix CVE-2018-11727?

libfsntfs: upgrade to newer than 20180420. Exact commands for each OS are on this page.

Q: Is CVE-2018-11727 being exploited?

CVE-2018-11727 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-11727 affect?

CVE-2018-11727 affects libfsntfs. Severity is medium (CVSS 5.5). The libfsntfs_attribute_read_from_mft function in libfsntfs_attribute.c in libfsntfs through 2018-04-20 allows remote attackers to cause an information disclosure (heap-based buffer over-read) via a crafted ntfs file. NOTE: the vendor has d

Q: How urgent is CVE-2018-11727?

Priority 36/100. No elevated risk signals yet.

Routine

MEDIUM 5.5UPGRADE

CVE-2018-11727 is a medium-severity flaw (CVSS 5.5) affecting libfsntfs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The libfsntfs_attribute_read_from_mft function in libfsntfs_attribute.c in libfsntfs through 2018-04-20 allows remote attackers to cause an information disclosure (heap-based buffer over-read) via a crafted ntfs file. NOTE: the vendor has disputed this as described in libyal/libfsntfs issue 8 on GitHub

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-125, CWE-200
Published	2018-06-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: libfsntfs project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-06-19 21:29 UTCPublished CVE record published
2026-06-17 01:36 UTCUpdated Record last modified

libfsntfs project libfsntfs UPGRADE

Affected: <= 20180420

Fixed in: newer than 20180420

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy libfsntfs || rpm -q libfsntfs || libfsntfs --version

2. UPGRADE to newer than 20180420 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade libfsntfs

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libfsntfs

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-11727?

libfsntfs: upgrade to newer than 20180420. Exact commands for each OS are on this page.

Is CVE-2018-11727 being exploited?

CVE-2018-11727 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-11727 affect?

CVE-2018-11727 affects libfsntfs. Severity is medium (CVSS 5.5). The libfsntfs_attribute_read_from_mft function in libfsntfs_attribute.c in libfsntfs through 2018-04-20 allows remote attackers to cause an information disclosure (heap-based buffer over-read) via a crafted ntfs file. NOTE: the vendor has d

How urgent is CVE-2018-11727?

Priority 36/100. No elevated risk signals yet.

Software pages

GitHub vulnerabilities

Related CVEs

CVE-2018-11731 MEDIUM 5.5 UPGRADE The libfsntfs_mft_entry_read_attributes function in libfsntfs_mft_entry.c in libfsntfs through 2018-04-20 allo
CVE-2018-11730 MEDIUM 5.5 UPGRADE The libfsntfs_security_descriptor_values_free function in libfsntfs_security_descriptor_values.c in libfsntfs
CVE-2018-11729 MEDIUM 5.5 UPGRADE The libfsntfs_mft_entry_read_header function in libfsntfs_mft_entry.c in libfsntfs through 2018-04-20 allows r
CVE-2018-11728 MEDIUM 5.5 UPGRADE The libfsntfs_reparse_point_values_read_data function in libfsntfs_reparse_point_values.c in libfsntfs through

References

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