CVE-2026-5940 | Foxit PDF Editor/Reader Annotation Use-After-Free Remote Code Execution Vulnerability

Calling a function that triggers a UI refresh after removing comments via a script may access an invalidated object, leading to program crashes.

Published: 2026-04-27 Last update: 2026-04-29 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-2026-5940 is rated Low Risk (32/100): CVSS High 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-2026-5940

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 2026-04-27 — 0.01% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-5940

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 14984358-7092-470d-8f34-ade47a7658a2
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 [email protected]

Weakness enumeration for CVE-2026-5940

GitHub Security Advisory for CVE-2026-5940

GHSA-gmwv-jpmc-ppqc · Severity: high — Calling a function that triggers a UI refresh after removing comments via a script may access an...

Affected software / configurations for CVE-2026-5940

Vendor Product Version Raw CPE
foxit pdf_editor < 13.2.4 cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
foxit pdf_editor >= 14.0.0, < 14.0.4 cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
foxit pdf_editor >= 2023.0.0, < 2026.1.1 cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
foxit pdf_reader < 2026.1.1 cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*

References for CVE-2026-5940

cvelogic Threat Intelligence