Buffer overflow in Libyal Libvmdk
CVE-2026-123269
A vulnerability was detected in libyal libvmdk. Affected by this vulnerability is the function libvmdk_descriptor_file_read_header of the file libvmdk/libvmdk_descriptor_file.c of the component Descriptor File Parser. The manipulation results in out-of-bounds read. The attack must be initiated from a local position. The exploit is now public and may be used. The patch is identified as 175d3fc0a0b961f362f16e7560a6169d7213e16b. It is best practice to apply a patch to resolve this issue.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/libyal/libvmdk/ (product)
- github.com/libyal/libvmdk/commit/175d3fc0a0b961f362f16e7560a6169d7213e16b (patch)
- github.com/libyal/libvmdk/issues/41 (issue-tracking)
- github.com/user-attachments/files/33394231/03_integer_underflow_poc.zip (exploit)
- CVE-2026-123269 | CVE Analysis and Report (third-party-advisory)
- Submit #1032842 | libyal (Joachim Metz) libvmdk 396e1873a030ac535bf919f6707d5be57613ae08` Memory corruption (third-party-advisory)
- VDB-431575 | libyal libvmdk Descriptor File libvmdk_descriptor_file.c libvmdk_descriptor_file_read_header out-of-bounds (technical-description, vdb-entry)
- VDB-431575 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-123269?
- CVE-2026-123269 is a low-severity vulnerability in Libyal Libvmdk, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 3.3/10. Published 2026-11-06.
- How severe is CVE-2026-123269?
- Low severity. CVSS v3 base score is 3.3 out of 10.