CVE-2026-3776

Application crash via unchecked stamp appearance object

Published Apr 1, 2026 · Updated Apr 1, 2026

Null pointer dereference in Foxit PDF Editor and PDF Reader 2025.3 and earlier allows attackers to crash the application via a crafted PDF. The stamp-annotation parser accesses the appearance resource after a missing AP entry leaves the associated object null, without a null or validity check. Exploitation requires a user to open the crafted document; successful exploitation terminates the affected desktop process without reported data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in Foxit PDF Editor and PDF Reader 2025.3 and earlier allows attackers to crash the application via a crafted PDF. The stamp-annotation parser accesses the appearance resource after a missing AP entry leaves the associated object null, without a null or validity check. Exploitation requires a user to open the crafted document; successful exploitation terminates the affected desktop process without reported data disclosure or modification.

The record

CVE
CVE-2026-3776
Published
Apr 1, 2026
Updated
Apr 1, 2026
Vendor
Foxit Software
Product
Foxit PDF Reader
Classifications
CWE-476, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Versions 2025.3 and earlier

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Foxit Software · Foxit PDF Readerversion=Versions 2025.3 and earlier
Foxit Software · Foxit PDF Editorversion=Versions 13.2.2 and earlier; version=Versions 14.0.2 and earlier; version=Versions 2025.3 and earlier

Published CVSS scores

5.5Foxit SoftwareCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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