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Vulnerability record · CVE-2023-38573 · published 27 November 2023

CVE-2023-38573: Foxitsoftware foxit reader use after free vulnerability

Foxitsoftware · Foxit Reader

A use-after-free vulnerability exists in the way Foxit Reader 12.1.2.15356 handles a signature field. A specially crafted Javascript code inside a malicious PDF document can trigger reuse of a previously freed object, which can lead to memory corruption and result in arbitrary code execution. An attacker needs to trick the user into opening the malicious file to trigger this vulnerability. Exploitation is also possible if a user visits a specially crafted, malicious site if the browser plugin extension is enabled.

8.8 CVSS 3.1 High EPSS 1.9% · top 21.1% CWE-416 · Use after free
8.8CVSS 3.1 base score
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A use-after-free vulnerability exists in the way Foxit Reader 12.1.2.15356 handles a signature field. A specially crafted Javascript code inside a malicious PDF document can trigger reuse of a previously freed object, which can lead to memory corruption and result in arbitrary code execution. An attacker needs to trick the user into opening the malicious file to trigger this vulnerability. Exploitation is also possible if a user visits a specially crafted, malicious site if the browser plugin extension is enabled.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1839 ExploitThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1839 ExploitThird Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1839

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-38574Foxitsoftware foxit reader sql injection vulnerabilityAn issue was discovered in Foxit Reader and PhantomPDF before 10.1.4. It allows SQL Injection via crafted data at the end of a string.EPSS 0.99%9.8CVE-2021-38568Foxitsoftware foxit reader out-of-bounds write vulnerabilityAn issue was discovered in Foxit Reader and PhantomPDF before 10.1.4. It allows memory corruption during conversion of a PDF document to a different …EPSS 1.1%9.8CVE-2021-38572Foxitsoftware foxit reader vulnerabilityAn issue was discovered in Foxit Reader and PhantomPDF before 10.1.4. It allows writing to arbitrary files because the extractPages pathname is not v…EPSS 1.1%9.8CVE-2021-38573Foxitsoftware foxit reader vulnerabilityAn issue was discovered in Foxit Reader and PhantomPDF before 10.1.4. It allows writing to arbitrary files because a CombineFiles pathname is not val…EPSS 1.1%9.8CVE-2021-33793Foxitsoftware foxit reader out-of-bounds write vulnerabilityFoxit Reader before 10.1.4 and PhantomPDF before 10.1.4 have an out-of-bounds write because the Cross-Reference table is mishandled during Office doc…EPSS 1.1%9.8CVE-2020-26534Foxitsoftware foxit reader use after free vulnerabilityAn issue was discovered in Foxit Reader and PhantomPDF before 10.1. There is an Opt object use-after-free related to Field::ClearItems and Field::Del…EPSS 2.4%9.8CVE-2020-26535Foxitsoftware foxit reader out-of-bounds write vulnerabilityAn issue was discovered in Foxit Reader and PhantomPDF before 10.1. If TslAlloc attempts to allocate thread local storage but obtains an unacceptable…EPSS 1.7%9.8CVE-2020-26537Foxitsoftware foxit reader out-of-bounds write vulnerabilityAn issue was discovered in Foxit Reader and PhantomPDF before 10.1. In a certain Shading calculation, the number of outputs is unequal to the number …EPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2023-38573), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.