CVE-2026-111140

Published: Oct 15, 2026Modified: Oct 21, 2026Deferred

6.9

Vector

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: disclosure@vulncheck.com (Secondary)

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.

Related CWEs

CWE-125

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

References (4)

https://github.com/libyal/libregf

Source: disclosure@vulncheck.com

https://github.com/libyal/libregf/blob/1a4bd856484263caa4a5e0d6ba377c3dc69150c7/libregf/libregf_value_item.c#L789-L935

Source: disclosure@vulncheck.com

https://hackmd.io/@haind-pwn/libregf-value-data-offset-oob-read

Source: disclosure@vulncheck.com

https://www.vulncheck.com/advisories/libregf-through-20260526-heap-out-of-bounds-read-via-libregf-value-item-read-value-data

Source: disclosure@vulncheck.com

Timeline

No history available yet.