CVE-2021-31473
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.3.37598.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (7.68%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.3.37598. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the browseForDoc function. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-13523.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 7.68% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- foxitsoftware/phantompdf · foxitsoftware/reader
- Source
- zdi-disclosures@trendmicro.com
EPSS moved from 7.7% on 30 September 2026 to 7.7% on 26 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- https://www.foxitsoftware.com/support/security-bulletins.phpVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-561/Third Party Advisory, VDB Entry
- https://www.foxitsoftware.com/support/security-bulletins.phpVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-561/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.