Foxit PDF Editor/PDF Reader prior 2026.1.1/14.0.4 UI Handler use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Foxit PDF Editor and PDF Reader. The affected element is an unknown function of the component UI Handler. Executing a manipulation can lead to use after free. The identification of this vulnerability is CVE-2026-5940. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Foxit PDF Editor and PDF Reader. This vulnerability affects an unknown functionality of the component UI Handler. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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

The advisory is available at foxit.com. This vulnerability was named CVE-2026-5940 since 04/09/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 05/07/2026).

Upgrading to version 2026.1.1 or 14.0.4 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-25826). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Vendor

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (Foxit): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: PDF Editor/PDF Reader 2026.1.1/14.0.4

Timelineinfo

04/09/2026 CVE reserved
04/27/2026 +18 days Advisory disclosed
04/27/2026 +0 days VulDB entry created
05/07/2026 +10 days VulDB entry last update

Sourcesinfo

Vendor: foxitsoftware.com

Advisory: foxit.com
Status: Confirmed

CVE: CVE-2026-5940 (🔒)
GCVE (CVE): GCVE-0-2026-5940
GCVE (VulDB): GCVE-100-359794
EUVD: 🔒

Entryinfo

Created: 04/27/2026 15:19
Updated: 05/07/2026 10:15
Changes: 04/27/2026 15:19 (62), 04/27/2026 16:31 (1), 05/07/2026 10:12 (2), 05/07/2026 10:15 (4)
Complete: 🔍
Committer: lywand
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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