Out-of-bounds Read Affecting libfsapfs package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.2% (10th percentile)

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  • Snyk IDSNYK-ECHOLATEST-LIBFSAPFS-21004899
  • published16 Oct 2026
  • disclosed15 Oct 2026

Introduced: 15 Oct 2026

NewCVE-2026-111133  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest libfsapfs.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libfsapfs package and not the libfsapfs package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

libfsapfs through 20260921 contains an integer underflow in libfsapfs_key_encrypted_key_read_data() that allows attackers to trigger heap out-of-bounds reads via crafted KEK attributes. Attackers can supply a crafted encrypted APFS image with malformed HMAC or wrapped KEK attribute lengths to crash fsapfsinfo, pyfsapfs, dfVFS or plaso and read adjacent heap memory before password checks.

CVSS Base Scores

version 3.1