CVE-2026-111140
libregf through 20260526 Heap Out-of-Bounds Read via libregf_value_item_read_value_data
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
libregf through 20260526 contains a heap out-of-bounds read in libregf_value_item_read_value_data() because it bounds value data size without subtracting the 4-byte old-format cell offset. Attackers can supply a crafted version 1.0/1.1 REGF hive with a value data cell ending its hive bin to leak adjacent heap bytes or crash parsers like regfexport and plaso.
| CWE | CWE-125 |
| Vendor | libyal |
| Product | libregf |
| Published | Oct 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Affected Versions
libyal / libregf
0 ≤ 20260526
References
hackmd.io: https://hackmd.io/@haind-pwn/libregf-value-data-offset-oob-read github.com: https://github.com/libyal/libregf/blob/1a4bd856484263caa4a5e0d6ba377c3dc69150c7/libregf/libregf_value_item.c#L789-L935 github.com: https://github.com/libyal/libregf vulncheck.com: https://www.vulncheck.com/advisories/libregf-through-20260526-heap-out-of-bounds-read-via-libregf-value-item-read-value-data
Credits
HaiND from the Post and Telecommunication Institute of Technology