CVE-2026-116728 Details
Description
libfvde through 20260923 contains a heap out-of-bounds read vulnerability in libfvde_encrypted_metadata_read_type_0x0024() because xml_plist_data_size is not checked against the source metadata block. Attackers can supply a crafted FileVault 2 Core Storage volume that makes libfvde_volume_open() copy past the heap block buffer, crashing the application.
A heap out-of-bounds read vulnerability has been identified in libfvde, a library for accessing FileVault 2 encrypted volumes, in versions through 20260923. The vulnerability arises in the function libfvde_encrypted_metadata_read_type_0x0024, where the size of XML plist data is not properly validated against the source metadata block. This oversight allows attackers to craft a FileVault 2 Core Storage volume that exploits the vulnerability, causing the application to crash by overwriting heap memory.
Users can update to the latest version of libfvde, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 26, 2026CISA-ADP
Assessed Oct 31, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/libyal/libfvde | [email protected] | Vendor |
| https://github.com/libyal/libfvde/blob/20260923/libfvde/libfvde_encrypted_metadata.c#L3798-L3813 | [email protected] | Source CodeVendor |
| https://github.com/libyal/libfvde/commit/c2676fe49d0da44d66e7d750e72c57d2670f0b8f | [email protected] | Source CodeVendor |
| https://github.com/libyal/libfvde/issues/70 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://hackmd.io/@haindpwn/libfvde-encrypted-metadata-oob-read | [email protected] | BundleExploitRemedyTechnical Analysis |
| https://www.vulncheck.com/advisories/libfvde-through-20260923-heap-out-of-bounds-read-via-libfvde-encrypted-metadata-read-type-0x0024 | [email protected] | AdvisoryBundleRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| libyal/libfvde | <= 20260923 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 31, 2026 | CVE Modified | CISA-ADP |
| Oct 26, 2026 | New CVE Received | [email protected] |