CVE-2026-91800
HIGH 8.8A local privilege escalation vulnerability exists in the installer of Foxit PDF Editor for macOS due to insufficient validation of a user-modifiable configuration value during high-privilege upgrades. A local attacker could exploit this issue to execute arbitrary commands with root privileges.
Severe if exploited (CVSS 8.8), but no known exploitation and low modeled probability. Patch on a normal cadence.
Exploitation likelihood
0.1%chance of exploitation in 30 days · 1st percentile
Impact if exploited
8.8CVSS 3.1 · HIGH
- ConfidentialityHigh
- IntegrityHigh
- AvailabilityHigh
What an attacker needs
- ⚠Access: Requires local access to the host
- ⚠Privileges: Requires a low-privilege account
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept & exploit code
- github-search Search GitHub for public PoC repos
Test against your own equipment
curl -s https://vulnpedia.com/cve/CVE-2026-91800/poc.jsonMachine-readable PoC index for this CVE (for automation).Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-91800/poc.json
Affected
Vendors Foxit Software Inc. Foxit Apple
Products Foxit Pdf Editor Pdf Editor Pdf Reader Macos
Weakness (CWE)
- CWE-732: : Incorrect Permission Assignment for Critical Resource
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Foxit | Pdf Editor | ≤ 13.2.6.63484 |
| Foxit | Pdf Editor | ≥ 14.0.0.68868 and ≤ 14.0.7.69441 |
| Foxit | Pdf Editor | ≥ 2023.1.0.55583 and ≤ 2023.3.0.63083 |
| Foxit | Pdf Editor | ≥ 2024.1.0.63682 and ≤ 2024.4.1.66479 |
| Foxit | Pdf Editor | ≥ 2025.1.0.66692 and ≤ 2025.3.0.69570 |
| Foxit | Pdf Editor | ≥ 2026.1.0.70169 and ≤ 2026.2.0.72029 |
| Foxit | Pdf Reader | ≤ 2026.2.0.72029 |
All CVSS metrics
- HIGH 8.8 v3.1 · CNA Primary
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - HIGH 8.8 v3.1 · NVD Secondary
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H