CVE-2026-91803
📛 CVE Title
Security Vulnerability Report – Foxit PDF Editor/Reader Updater DLL Search Path Hijacking
Description
A local privilege escalation vulnerability exists in the updater of Foxit PDF Editor/Reader due to unsafe loading of dynamic-link libraries from a user-writable directory during high-privilege operations. A local attacker could exploit this issue to execute code with elevated privileges.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- Foxit
- CVSS severity
- HIGH
- CVSS score
- 8.8 / 10
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H- Effective score
- 8.8 / 10 HIGH source: CNA overview
- CWE(s)
-
CWE-427 - Reserved
- 2026-09-15
- Published
- 2026-09-23 07:50 UTC
- Last updated
- 2026-09-23 14:40 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/91xxx/CVE-2026-91803.json
- Linked Threat
- CVE-2026-91803 — Security Vulnerability Report – Foxit PDF Editor/Reader Updater DLL Search Path Hijacking
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
- 8.8 / 10 HIGH source: 14984358-7092-470d-8f34-ade47a7658a2
- NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H- Exploitability subscore
- 2.0 / 10
- Impact subscore
- 6.0 / 10
- EPSS score
- 0.0017 (probability of exploitation in next 30 days)
- EPSS percentile
- 6.40% 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-2026-85166 - Assigner
- Foxit
- Published
- Sep 23, 2026, 7:50:13 AM
- Updated
- Sep 23, 2026, 2:40:38 PM
- EUVD base score (CVSS 3.1)
-
8.8 / 10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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 Reader (Versions 2026.2 and earlier)Foxit PDF Editor (Versions 2026.2 and earlier)
- Aliases
-
GHSA-hh85-f5h8-q4pf
ENISA description: A local privilege escalation vulnerability exists in the updater of Foxit PDF Editor/Reader due to unsafe loading of dynamic-link libraries from a user-writable directory during high-privilege operations. A local attacker could exploit this issue to execute code with elevated privileges.
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)
|
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:anonhaven.com
A local privilege escalation vulnerability exists in the updater of Foxit PDF Editor/Reader due to unsafe loading of dynamic-link libraries from a user-writable directory during high-privilege operations. A local attacker could exploit this issue to execute code with elevated privileges.
2026-09-24 15:25 UTC -
web:cvebrief.com
Remediation Immediate Action: Monitor the official Foxit Security Bulletins page for the release of a patched version and apply the update to all affected installations as soon as it becomes available. Proactive Monitoring: Review system logs for unusual file creation or modification events within the directories used by the Foxit updater process.
2026-09-24 15:25 UTC -
web:cvefeed.io
The following list is the news that have been mention CVE-2026-91803 vulnerability anywhere in the article. Results are limited to the first 20 news articles due to potential performance issues. The following table lists the changes that have been made to the CVE-2026-91803 vulnerability over time.
2026-09-24 15:25 UTC -
web:helpx.adobe.com
This page contains important information regarding security vulnerabilities that could affect specific versions of Adobe products. Use this information to take the prescribed corrective actions.
2026-09-24 15:25 UTC -
web:msrc.microsoft.com
The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.
2026-09-24 15:25 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 15:25 UTC -
web:support.microsoft.com
Note To apply this security update, you must have the release version of Excel 2016 installed on the computer.
2026-09-24 15:25 UTC -
web:vulners.com
CVE-2026-91803 🗓️ 23 Sep 2026 00:50:13 Reported by Foxit Type cve 🔗 web.nvd.nist.gov 👁 17 Views
2026-09-24 15:25 UTC -
web:www.rapid7.com
CVE-2026-91803 : Foxit Software Inc.: A local privilege escalation vulnerability exists in the updater of Foxit PDF Editor/Reader due to unsafe loading of…. View severity, references, and remediation details from Rapid7.
2026-09-24 15:25 UTC -
web:www.tenable.com
Addressed potential issues where the application could be exposed to an Incorrect Permission Assignment for Critical Resource, Uncontrolled Search Path Element, Improper Certificate Validation, or Time-of-Check Time-of-Use (TOCTOU) Race Condition vulnerability during update, which attackers could exploit to execute arbitrary code with elevated privileges. This occurs due to an insecure ...
2026-09-24 15:25 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-91803.json.
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