What’s Vulnerable › Vulnerabilities

CVE-2026-111140: libregf through 20260526 Heap Out-of-Bounds Read via libregf_value_item_read_value_data

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-15 · updated 2026-10-21
• Weakness: CWE-125

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.

Affected products

• libyal libregf: through 20260526

References

• https://github.com/libyal/libregf
• https://github.com/libyal/libregf/blob/1a4bd856484263caa4a5e0d6ba377c3dc69150c7/libregf/libregf_value_item.c#L789-L935
• https://hackmd.io/@haind-pwn/libregf-value-data-offset-oob-read
• https://www.vulncheck.com/advisories/libregf-through-20260526-heap-out-of-bounds-read-via-libregf-value-item-read-value-data

Get alerted when CVE-2026-111140 or the next vulnerability affects your stack