Improper signature verification in Foxit PDF Editor
Priority LOW 24CWE-347Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-347.
Summary
A signature validation vulnerability exists in Foxit PDF Editor/Reader’s handling of incrementally updated PDF documents. Changes to visible document content may not invalidate the existing signature, allowing attackers to alter signed content and potentially carry out content spoofing while the document continues to appear validly signed.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00098 0th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Foxit Software Inc. | Foxit PDF Editor | up to 2026.2; up to 14.0.7; up to 13.2.6 | — | No fix listed | CNA |
| Foxit Software Inc. | Foxit PDF Reader | up to 2026.2 | — | No fix listed | CNA |
- Foxit PDF Editor VendorFoxit Software Inc. Affected up to 2026.2; up to 14.0.7; up to 13.2.6 Fixed in — No fix listed CNA
- Foxit PDF Reader VendorFoxit Software Inc. Affected up to 2026.2 Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:* | up to 13.2.5.63482; 14.0.0.33046 – 14.0.7.33751; 2023.1.0.15510 – 2023.3.0.23028; 2024.1.0.23997 – 2024.4.1.27687; 2025.1.0.27937 – 2025.3.0.35737; 2026.1.0.36452 – 2026.2.0.39747 | Vulnerable | Foxit |
| cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:* | up to 2026.2.0.39747 | Vulnerable | Foxit |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:* | up to 13.2.2.63349; 14.0.0.68868 – 14.0.7.69441; 2023.1.0.55583 – 2023.3.0.63083; 2024.1.0.63682 – 2024.4.1.66479; 2025.1.0.66692 – 2025.3.0.69570; 2026.1.0.70169 – 2026.2.0.72029 | Vulnerable | Foxit |
| cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:* | up to 2026.2.1.39815 | Vulnerable | Foxit |
| cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Apple |
- cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:* Versions up to 13.2.5.63482; 14.0.0.33046 – 14.0.7.33751; 2023.1.0.15510 – 2023.3.0.23028; 2024.1.0.23997 – 2024.4.1.27687; 2025.1.0.27937 – 2025.3.0.35737; 2026.1.0.36452 – 2026.2.0.39747 Vulnerable ·Foxit
- cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:* Versions up to 2026.2.0.39747 Vulnerable ·Foxit
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:* Versions up to 13.2.2.63349; 14.0.0.68868 – 14.0.7.69441; 2023.1.0.55583 – 2023.3.0.63083; 2024.1.0.63682 – 2024.4.1.66479; 2025.1.0.66692 – 2025.3.0.69570; 2026.1.0.70169 – 2026.2.0.72029 Vulnerable ·Foxit
- cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:* Versions up to 2026.2.1.39815 Vulnerable ·Foxit
- cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Apple
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-91814
- 2026-10-03 Alias added: GHSA-c9r7-69j9-jq5j
- 2026-10-29 CVSS score added · NVD
References
More Foxit Software Inc. vulnerabilities
- TI-2011-04633 Foxit PDF Reader < 4.3.1.0218 JavaScript File Write CVSS 4.0HIGH 8.4
- TI-2016-06851 Out-of-bounds read in Foxit Reader CVSS 3.0MEDIUM 6.8
- TI-2018-02932 Use after free in Foxit PDF Reader CVSS 3.1HIGH 7.8
- TI-2018-02965 Use after free in Foxit PDF Reader CVSS 3.1HIGH 8.8
- TI-2018-02964 Use after free in Foxit PDF Reader CVSS 3.1HIGH 8.8
- TI-2018-02962 Use after free in Foxit PDF Reader CVSS 3.1HIGH 8.8
Sources
- CVE-2026-91814 · CVE Program
- CVE-2026-91814 · NVD
- FIRST EPSS
- GHSA-c9r7-69j9-jq5j · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences