CVE-2026-111140
libregf through 20260526 Heap Out-of-Bounds Read via libregf_value_item_read_value_data
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 15, 2026
- Updated
- Oct 21, 2026
- Reserved
- Oct 15, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.1 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
libregflibyal |
|
References
- https://hackmd.io/@haind-pwn/libregf-value-data-offset-oob-readtechnical-descriptionexploit
- https://github.com/libyal/libregf/blob/1a4bd856484263caa4a5e0d6ba377c3dc69150c7/libregf/libregf_value_item.c#L789-L935technical-description
- https://github.com/libyal/libregfproduct
- VulnCheck Advisory: libregf through 20260526 Heap Out-of-Bounds Read via libregf_value_item_read_value_datathird-party-advisory
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