Use after free in Foxit
Priority MEDIUM 42CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.3.37598. A specially crafted PDF document can trigger the reuse of previously free memory, which can lead to arbitrary code execution. An attacker needs to trick the user into opening a malicious file or site to trigger this vulnerability if the browser plugin extension is enabled.
Why it matters now
EPSS 0.01758 78th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Foxit | Foxit Reader 10.1.3.37598 | — | No fix listed | CNA |
- Foxit Vendor— Affected Foxit Reader 10.1.3.37598 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:foxitsoftware:foxit_reader:10.1.3.37598:*:*:*:*:*:*:* | 10.1.3.37598 | Vulnerable | Foxitsoftware |
- cpe:2.3:a:foxitsoftware:foxit_reader:10.1.3.37598:*:*:*:*:*:*:* Versions 10.1.3.37598 Vulnerable ·Foxitsoftware
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-21822
- 2026-10-03 Alias added: GHSA-v89w-v9jm-g4f3
References
More Foxitsoftware Foxit Reader vulnerabilities
- TI-2020-10635 Use after free in Foxit CVSS 3.1HIGH 8.8
- TI-2020-10626 Use after free in Foxit CVSS 3.1HIGH 8.8
- TI-2023-21064 An arbitrary file creation vulnerability exists in the Javascript exportDataObject API of… CVSS 3.1HIGH 8.8
- TI-2023-19948 Use after free in Foxit Reader CVSS 3.1HIGH 8.8
- TI-2023-18045 An arbitrary file creation vulnerability exists in the Javascript exportDataObject API of… CVSS 3.1HIGH 8.8
- TI-2018-07063 Use after free in Foxit Reader CVSS 3.0HIGH 8.8
Sources
- CVE-2021-21822 · CVE Program
- CVE-2021-21822 · NVD
- FIRST EPSS
- GHSA-v89w-v9jm-g4f3 · 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