CVE-2026-57256: Foxit Editor/Reader List Box Format Use-After-Free Vulnerability
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-08 00:03 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
When the application opens a PDF and executes JavaScript, it performs abnormal operations on the list box field, and this operation is repeated after the form is reset. During this process, the application failed to adequately verify the validity of the form objects and their internal dictionary pointers, resulting in accessing internal members of invalid or improperly initialized fields. This led to an illegal pointer read, ultimately causing the application to crash.
Description quoted from the CVE record (assigned by Foxit, published 2026-07-08).
Weakness: CWE-416 Use after free
How it can be exploited
Exploitable with local access with low attack complexity needing no privileges and a user must take an action. Impact: confidentiality high, integrity high, availability high. CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA assessment (SSVC): CISA has no evidence of exploitation. Automatable: no. Technical impact: total.
Public exploit evidence (Exploit Observer)
Exploit Observer found 2 research write-ups naming this CVE.
See all 5 references on Exploit Observer
Live scores
- EPSS
- 0.002
low predicted chance of attack - VEDAS
- 0.987
strong exploit evidence - On CISA KEV
- Not listed
- Detection rule
- No public rule yet
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| Foxit Software Inc. Foxit PDF Editor | version Versions 2026.1.1 and earlier version Versions 14.0.4 and earlier version Versions 13.2.4 and earlier | Not stated |
| Foxit Software Inc. Foxit PDF Editor | version Versions 2026.1.1 and earlier version Versions 14.0.3 and earlier | Not stated |
| Foxit Software Inc. Foxit PDF Reader | version Versions 2026.1.1 and earlier | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
No fixed version or vendor advisory is listed in the CVE record yet. Watch the vendor’s security page.
How to detect it
There is no open VEDAS detection rule for this bug yet. It is listed on the detection gaps page if CISA has confirmed attacks.
References
Other references
- https://www.foxit.com/support/security-bulletins.html
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2420
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.
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