PT-2021-5376 · Foxit · Foxit Pdf Reader+1

Cor3Sm4Sh3R · Published 2021-10-15 · Updated 2025-08-13 · CVE-2021-34957

Positive Technologies (AI Summary)

CVSS v2.0

10

High

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Foxit PDF Reader and Foxit PDF Editor (affected versions not specified)

Description The issue is caused by a use-after-free vulnerability in the handling of Annotation objects, which results from the lack of validating the existence of an object prior to performing operations on the object. This allows remote attackers to execute arbitrary code on affected installations by opening a malicious file or visiting a malicious page, requiring user interaction to exploit the vulnerability.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Buffer Overflow

Use After Free

Weakness Enumeration

CWE-119

CWE-416

Related Identifiers

BDU:2021-06211

CVE-2021-34957

ZDI-21-1188

Affected Products

Foxit Pdf Editor

Foxit Pdf Reader

References · 12

• https://osv.dev/vulnerability/CVE-2021-34957 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-21-1188 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/671771 · Security Note
• https://foxit.com/support/security-bulletins.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-06211 · Security Note
• https://safe-surf.ru/upload/VULN/VULN-20211130.5.pdf · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-34957 · Security Note
• https://twitter.com/CVEnew/status/1788295964794789994 · Twitter Post
• https://t.me/cvenotify/79513 · Telegram Post
• https://zerodayinitiative.com/advisories/ZDI-21-1187 · Note
• https://t.me/cveNotify/132090 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2021112906 · Note