Foxit PDF Reader AcroForm Signature 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 was found in Foxit PDF Reader and classified as critical. Affected by this vulnerability is an unknown functionality of the component AcroForm Signature Handler. Executing a manipulation can lead to use after free. The identification of this vulnerability is CVE-2023-51551. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Foxit PDF Reader (Document Reader Software) (the affected version is unknown). This vulnerability affects an unknown code of the component AcroForm Signature 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:

Foxit PDF Reader AcroForm Signature Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. 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 Signature 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-22003.

The weakness was shared 12/21/2023 as ZDI-23-1873. The advisory is shared for download at zerodayinitiative.com. This vulnerability was named CVE-2023-51551 since 12/20/2023. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

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: 🔍

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

12/20/2023 🔍
12/21/2023 +1 days 🔍
12/21/2023 +0 days 🔍
08/13/2025 +601 days 🔍

Sourcesinfo

Vendor: foxitsoftware.com

Advisory: ZDI-23-1873
Status: Confirmed

CVE: CVE-2023-51551 (🔍)
GCVE (CVE): GCVE-0-2023-51551
GCVE (VulDB): GCVE-100-248644

Entryinfo

Created: 12/21/2023 07:44
Updated: 08/13/2025 20:29
Changes: 12/21/2023 07:44 (38), 08/13/2025 20:29 (28)
Complete: 🔍
Cache ID: 216::103

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