CVE-2026-110598CWE-125

CVE-2026-110598

Medium · published October 14, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
6.1
In the wild
Unconfirmed
What it is

Libyal libpff through 20260926 contains an integer underflow in libpff_record_entry_get_multi_value() that allows attackers to trigger heap out-of-bounds reads via non-monotonic multi-value offsets. Attackers can craft PST, OST or PAB files with decreasing PT_MV_STRING8, PT_MV_UNICODE or PT_MV_BINARY offsets to crash libpff, pypff or pffexport and expose adjacent heap memory.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
CVSS v4.0
6.9 · 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
EPSS
0.00171 · 6.1th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-10-14T19:17Z
References (4)
https://github.com/libyal/libpff/blob/03545511ab7a7a609e50ec715bdd3985c3be71c5/libpff/libpff_multi_value.c#L207-L271 · [email protected]https://github.com/libyal/libpff/blob/03545511ab7a7a609e50ec715bdd3985c3be71c5/libpff/libpff_record_entry.c#L2825-L2874 · [email protected]https://hackmd.io/@haind-pwn/libpff-multivalue-offset-underflow-oob-read · [email protected]https://www.vulncheck.com/advisories/libyal-libpff-through-20260926-heap-out-of-bounds-read-via-libpff-record-entry-get-multi-value · [email protected]
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 14 OCT 14:16Z
    Libyal libpff through 20260926 heap out-of-bounds read via libpff_record_entry_get_multi_value
    cvelistv5
  • 14 OCT 14:16Z
    Libyal libpff through 20260926 heap out-of-bounds read via libpff_record_entry_get_multi_value
    cvelistv5