PT-2026-35405 · Foxit · Foxit Pdf Reader+1

Published 2026-04-27 · Updated 2026-04-27 · CVE-2026-5943

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description A use-after-free issue exists in the AcroForm Annotation component. Document structural anomalies cause inconsistencies between page element relationships and internal index states. When scripts trigger document modifications, object reference validity is not properly maintained, which can lead to a crash when accessing an invalid pointer during page information queries. This may allow a remote attacker to execute arbitrary code or disclose confidential information.

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

RCE

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2026-06115

CVE-2026-5943

ZDI-26-304

Affected Products

Foxit Pdf Editor

Foxit Pdf Reader

References · 6

• https://foxit.com/support/security-bulletins.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-06115 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-5943 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-26-304 · Security Note
• https://t.me/CVEtracker/51936 · Telegram Post
• https://twitter.com/CVEnew/status/2048852195940999284 · Twitter Post