CVE-2021-34951

Foxit PDF Reader Annotation Use of Uninitialized Variable Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit PDF Reader. 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 handling of Annotation objects. The issue results from the lack of proper initialization of a pointer prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-14395.

• CWE-457

• https://www.foxit.com/support/security-bulletins.htmlVendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-21-1182/Third Party Advisory
• https://www.foxit.com/support/security-bulletins.htmlVendor Advisory
• https://www.zerodayinitiative.com/advisories/ZDI-21-1182/Third Party Advisory

Published

May 7, 2024

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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