CVE-2026-57256
HIGH 7.8 ALL-YEARSWhen 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.
Severe if exploited (CVSS 7.8), but no confirmed exploitation. Patch on a normal cadence.
Exploitation likelihood
0.2%chance of exploitation in 30 days · 7th percentile
Impact if exploited
7.8CVSS 3.1 · HIGH · CNA
- ConfidentialityHigh
- IntegrityHigh
- AvailabilityHigh
What an attacker needs
- ⚠Access: Requires local access to the host
- ✓Privileges: No account or privileges required
- ⚠User interaction: A user must take an action (click / open a file)
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
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Affected
Vendors Foxit Software Inc. Foxit Apple Microsoft
Products Foxit Pdf Editor Foxit Pdf Reader Pdf Editor Pdf Reader Macos Windows
Weakness (CWE)
- CWE-416: Use after free
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References and research data (JSON)
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Foxit | Pdf Editor | ≤ 13.2.4.24048 |
| Foxit | Pdf Editor | ≥ 14.0.0.33046 and ≤ 14.0.4.33508 |
| Foxit | Pdf Editor | ≥ 2023.1.0.15510 and ≤ 2023.3.0.23028 |
| Foxit | Pdf Editor | ≥ 2024.1.0.23997 and ≤ 2024.4.1.27687 |
| Foxit | Pdf Editor | ≥ 2025.1.0.27937 and ≤ 2025.3.0.35737 |
| Foxit | Pdf Editor | ≥ 2026.1.0.36452 and ≤ 2026.1.1.36485 |
| Foxit | Pdf Reader | ≤ 2026.1.1.36485 |
All CVSS metrics
- HIGH 7.8 v3.1 · CNA Primary
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - HIGH 7.8 v3.1 · NVD Secondary
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
Advisories
- https://www.foxit.com/support/security-bulletins.html CVE record · Foxit · Updated 2026-07-08T07:35:59.810Z
NVD · CVE-2026-57256 · Updated 2026-07-09T18:16:54.613 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-42192 EUVD · EUVD-2026-42192
Technical & other
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2420CVE record · CVE · Updated 2026-07-09T17:37:54.106Z
NVD · CVE-2026-57256 · Updated 2026-07-09T18:16:54.613
Sources: NVD · CVE.org · All sources and attribution · EPSS