Foxit PDF Editor 11.0.0.49893 StrikeOut Annotation use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Foxit PDF Editor 11.0.0.49893. The affected element is an unknown function of the component StrikeOut Annotation Handler. The manipulation leads to use after free. This vulnerability is listed as CVE-2021-34954. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Foxit PDF Editor 11.0.0.49893. This issue affects some unknown processing of the component StrikeOut Annotation Handler. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Foxit PDF Editor StrikeOut Annotation Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14355.

It is possible to read the advisory at zerodayinitiative.com. The identification of this vulnerability is CVE-2021-34954 since 06/17/2021. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

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 (Zero Day Initiative): 🔍

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: 🔍

Timelineinfo

06/17/2021 🔍
05/07/2024 +1055 days 🔍
05/08/2024 +0 days 🔍
08/14/2025 +463 days 🔍

Sourcesinfo

Vendor: foxitsoftware.com

Advisory: ZDI-21-1185
Status: Confirmed

CVE: CVE-2021-34954 (🔍)
GCVE (CVE): GCVE-0-2021-34954
GCVE (VulDB): GCVE-100-263423

Entryinfo

Created: 05/08/2024 01:24
Updated: 08/14/2025 00:03
Changes: 05/08/2024 01:24 (63), 03/31/2025 12:59 (4), 08/14/2025 00:03 (1)
Complete: 🔍
Cache ID: 216::103

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