CVE-2026-3776 | Null pointer dereference in Foxit PDF Editor/Reader when accessing stamp annotation

The application does not validate the presence of required appearance (AP) data before accessing stamp annotation resources. When a PDF contains a stamp annotation missing its AP entry, the code continues to dereference the associated object without a prior null or validity check, which allows a crafted document to trigger a null pointer dereference and crash the application, resulting in denial of service.

Published: 2026-04-01 Last update: 2026-04-14 Assigner: 14984358-7092-470d-8f34-ade47a7658a2 Source: 14984358-7092-470d-8f34-ade47a7658a2
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-3776 is rated Low Risk (22.9/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.01%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-3776

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-01 — 0.01% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-3776

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 14984358-7092-470d-8f34-ade47a7658a2

Weakness enumeration for CVE-2026-3776

Affected software / configurations for CVE-2026-3776

Vendor Product Version Raw CPE
foxit pdf_editor <= 13.2.2.24014 cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
foxit pdf_editor >= 14.0.0.33046, <= 14.0.2.33402 cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
foxit pdf_editor >= 2023.1.0.15510, <= 2023.3.0.23028 cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
foxit pdf_editor >= 2024.1.0.23997, <= 2024.4.1.27687 cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
foxit pdf_editor >= 2025.1.0.27937, <= 2025.3.0.35737 cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
foxit pdf_reader <= 2025.3.0.35737 cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*
foxit pdf_editor <= 13.2.2.63349 cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
foxit pdf_editor >= 14.0.0.68868, <= 14.0.2.69164 cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
foxit pdf_editor >= 2023.1.0.55583, <= 2023.3.0.63083 cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
foxit pdf_editor >= 2024.1.0.63682, <= 2024.4.1.66479 cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
foxit pdf_editor >= 2025.1.0.66692, <= 2025.3.0.69570 cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
foxit pdf_reader <= 2025.3.0.69570 cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*

References for CVE-2026-3776

cvelogic Threat Intelligence