CVE-2026-5939 Vulnerability Analysis & Exploit Details

CVE-2026-5939
Vulnerability Scoring

5.5

/10

Significant Risk

Security assessments indicate that CVE-2026-5939 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

Attack Complexity: Low
Exploits can be performed without significant complexity or special conditions.
Attack Vector: Local
Vulnerability requires local system access.
Privileges Required: None
No privileges are required for exploitation.
Scope: Unchanged
Exploit remains within the originally vulnerable component.
User Interaction: Required
User interaction is necessary for successful exploitation.

CVE-2026-5939 Details

Status: Analyzed

Last updated: 🕔 29 Apr 2026, 17:28 UTC
Originally published on: 🕛 27 Apr 2026, 12:16 UTC

Time between publication and last update: 2 days

CVSS Release: version 3

CVSS3 Source

14984358-7092-470d-8f34-ade47a7658a2

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2026-5939 Vulnerability Summary

CVE-2026-5939: A crafted XFA PDF can trigger a use-after-free condition during calculate event processing, causing the application to crash and resulting in an arbitrary code execution.

Assessing the Risk of CVE-2026-5939

Access Complexity Graph

The exploitability of CVE-2026-5939 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-5939

With low attack complexity and no required privileges, CVE-2026-5939 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-5939, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-5939, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: None
CVE-2026-5939 has no significant impact on data confidentiality.
Integrity: None
CVE-2026-5939 poses no threat to data integrity.
Availability: High
CVE-2026-5939 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2026-5939 References

External References

https://www.foxit.com/support/security-bulletins.html

CWE Common Weakness Enumeration

CWE-416

Vulnerable Configurations

cpe:2.3:a:foxit:pdf_editor:14.0.0.33046:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:14.0.0.33046:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:14.0.0.68868:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:14.0.0.68868:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:14.0.1.33197:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:14.0.1.33197:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:14.0.1.69005:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:14.0.1.69005:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2023.1.0.15510:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2023.1.0.15510:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2023.2.0.21408:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2023.2.0.21408:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2023.2.0.61611:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2023.2.0.61611:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2023.3.0.23028:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2023.3.0.23028:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2023.3.0.63083:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2023.3.0.63083:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2024.1.0.23997:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2024.1.0.23997:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2024.1.0.63682:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2024.1.0.63682:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2024.2.1.25153:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2024.2.1.25153:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2024.3.0.26795:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2024.3.0.26795:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2024.4:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2024.4:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2024.4.1.27687:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2024.4.1.27687:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2024.4.1.66479:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2024.4.1.66479:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2025.1.0.27937:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2025.1.0.27937:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2025.1.0.66692:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2025.1.0.66692:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2025.2.0.33046:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2025.2.0.33046:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2025.2.0.68868:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2025.2.0.68868:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2025.2.1.33197:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2025.2.1.33197:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2025.2.1.69005:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_editor:2025.2.1.69005:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:-:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:-:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:8.3.2.25013:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:8.3.2.25013:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:9.0.1.1049:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:9.0.1.1049:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:10.1.0.37527:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:10.1.0.37527:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:10.1.3.37598:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:10.1.3.37598:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:10.1.4.37651:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:10.1.4.37651:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.0.0.49893:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.0.0.49893:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.0.1.0719:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.0.1.0719:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.0.1.49938:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.0.1.49938:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.1:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.1:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.1.0.52543:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.1.0.52543:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.2.1:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.2.1:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.2.1.53537:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.2.1.53537:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.2.2:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.2.2:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.2.2.53575:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:11.2.2.53575:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.0:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.0:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.0.1:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.0.1:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.0.1.12430:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.0.1.12430:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.0.2:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.0.2:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.1:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.1:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.1.0.1229:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.1.0.1229:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.1.0.15250:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.1.0.15250:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.1.1.15289:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.1.1.15289:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.1.2.15332:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.1.2.15332:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.1.3.15356:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:12.1.3.15356:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2023.1.0.15510:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2023.1.0.15510:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2023.2.0.21408:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2023.2.0.21408:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2023.2.0.61611:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2023.2.0.61611:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2023.3.0.23028:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2023.3.0.23028:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2023.3.0.63083:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2023.3.0.63083:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2024.1.0.23997:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2024.1.0.23997:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2024.1.0.63682:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2024.1.0.63682:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2024.2.0.25138:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2024.2.0.25138:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2024.2.1.25153:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2024.2.1.25153:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2024.3.0.26795:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2024.3.0.26795:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2024.4:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2024.4:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2025.1.0.27937:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2025.1.0.27937:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2025.1.0.66692:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2025.1.0.66692:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2025.2.0.33046:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2025.2.0.33046:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2025.2.0.68868:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2025.2.0.68868:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2025.2.1.33197:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2025.2.1.33197:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2025.2.1.69005:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:2025.2.1.69005:*:*:*:*:*:*:*

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