CVE-2026-91806
📛 CVE Title
Foxit PDF Editor/Reader Doc Object Use-After-Free Information Disclosure Vulnerability
Description
A use-after-free vulnerability exists in Foxit PDF Editor/Reader’s handling of PDF form fields. Embedded JavaScript may access form-field references after the corresponding fields have been released, resulting in an application crash.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- Foxit
- CVSS severity
- HIGH
- CVSS score
- 7.8 / 10
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Effective score
- 7.8 / 10 HIGH source: CNA overview
- CWE(s)
-
CWE-416 - Reserved
- 2026-09-15
- Published
- 2026-09-23 07:50 UTC
- Last updated
- 2026-09-23 14:41 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/91xxx/CVE-2026-91806.json
- Linked Threat
- CVE-2026-91806 — Foxit PDF Editor/Reader Doc Object Use-After-Free Information Disclosure Vulnerability
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-09-23 08:17:12 UTC
- NVD last modified
- 2026-09-23 17:58:26 UTC
- NVD CVSS v3.1
- 7.8 / 10 HIGH source: 14984358-7092-470d-8f34-ade47a7658a2
- NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Exploitability subscore
- 1.8 / 10
- Impact subscore
- 5.9 / 10
- EPSS score
- 0.0017 (probability of exploitation in next 30 days)
- EPSS percentile
- 6.75% vs all CVEs — higher = more likely to be exploited, as of 2026-09-23
NVD / KEV / EPSS data refreshed 2026-09-24 04:30 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-85118 - Assigner
- Foxit
- Published
- Sep 23, 2026, 7:50:29 AM
- Updated
- Sep 23, 2026, 2:41:45 PM
- EUVD base score (CVSS 3.1)
-
7.8 / 10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EUVD-reported EPSS
- 0.1700
- Vendors
- Foxit Software Inc.
- Products
-
Foxit PDF Editor (Versions 14.0.7 and earlier)Foxit PDF Editor (Versions 13.2.6 and earlier)Foxit PDF Reader (Versions 2026.2 and earlier)Foxit PDF Editor (Versions 2026.2 and earlier)
- Aliases
-
GHSA-4h83-4r8f-37h5
ENISA description: A use-after-free vulnerability exists in Foxit PDF Editor/Reader’s handling of PDF form fields. Embedded JavaScript may access form-field references after the corresponding fields have been released, resulting in an application crash.
EUVD references (1)
Affected products (2)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| Foxit Software Inc. | Foxit PDF Editor |
Versions 2026.2 and earlier (affected),
Versions 14.0.7 and earlier (affected),
Versions 13.2.6 and earlier (affected)
|
Windows |
| Foxit Software Inc. | Foxit PDF Reader |
Versions 2026.2 and earlier (affected)
|
Windows |
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
Web references (0)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
No web references attached yet.
NVD-tagged references (1)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://www.foxit.com/support/security-bulletins.html 14984358-7092-470d-8f34-ade47a7658a2
Remediations (10)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:app.opencve.io
Remediation No vendor fix or workaround currently provided. OpenCVE Recommended Actions Apply the Microsoft security update released for CVE - 2026 -69806 to all installed .NET runtimes and Visual Studio editions mentioned.
2026-09-24 11:09 UTC -
web:cvefeed.io
A use-after-free vulnerability exists in Foxit PDF Editor/Reader's handling of PDF form fields. Embedded JavaScript may access form-field references after the corresponding fields have been released, resulting in an application crash.
2026-09-24 11:09 UTC -
web:hermes-codex.vercel.app
Comprehensive analysis of September 2026 Patch Tuesday: a historic record of 972 vulnerabilities resolved, 2 active zero-days, 113 critical flaws (Netlogon, DNS, DHCP, MSMQ, Hyper-V, SSTP), and the public ShieldCrash Defender zero-day.
2026-09-24 11:09 UTC -
web:senserva.com
Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.
2026-09-24 11:09 UTC -
web:support.microsoft.com
Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2016. It doesn't apply to the Office 2016 Click-to-Run editions, such as Microsoft Office 365 Home. (See What version of Office am I using?) How to get and install the update Method 1: Microsoft Update This update is available from Microsoft Update. When you turn on ...
2026-09-24 11:09 UTC -
web:vulners.com
CVE-2026-91806 🗓️ 23 Sep 2026 00:50:29 Reported by Foxit Type cve 🔗 web.nvd.nist.gov 👁 9 Views
2026-09-24 11:09 UTC -
web:www.cisecurity.org
<p>Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for remote code execution. Successful exploitation of the most severe of these vulnerabilities could result in an attacker gaining the same privileges as the logged-on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or ...
2026-09-24 11:09 UTC -
web:www.cvefind.com
Full details for CVE-2026-91806 : technical description, impact, CVSS/EPSS scores, linked CWE, CAPEC, affected CPEs, disclosure date, and mitigation options.
2026-09-24 11:09 UTC -
web:www.strix.ai
How severe is CVE-2026-91806 ? CVE-2026-91806 has a CVSS score of 7.8/10 (HIGH severity). How do I fix CVE-2026-91806 ? Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
2026-09-24 11:09 UTC -
web:www.tenable.com
Addressed potential issues where the application could be exposed to a Use-After-Free vulnerability and crash when handling certain image objects, annotation objects, JavaScript array objects, page objects, or form fields, which attackers could exploit to disclose information or execute remote code. This occurs due to the access to an object that has been freed or released without proper ...
2026-09-24 11:09 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-91806.json.
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