| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.9 | $0-$5k | 0.00 |
Summary
A vulnerability was found in Foxit PDF Reader. It has been rated as critical. This vulnerability affects unknown code of the component AcroForm Doc Handler. This manipulation causes use after free. This vulnerability is tracked as CVE-2023-51556. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.
Details
A vulnerability has been found in Foxit PDF Reader (Document Reader Software) (version unknown) and classified as critical. Affected by this vulnerability is an unknown function of the component AcroForm Doc 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. The summary by CVE is:
Foxit PDF Reader AcroForm Doc 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 Doc 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-22255.
The weakness was disclosed 12/21/2023 as ZDI-23-1869. It is possible to read the advisory at zerodayinitiative.com. This vulnerability is known as CVE-2023-51556 since 12/20/2023. 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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Product
Type
Vendor
Name
License
Website
- Vendor: https://www.foxitsoftware.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.0VulDB 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: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Use after freeCWE: 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: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
12/20/2023 🔍12/21/2023 🔍
12/21/2023 🔍
08/13/2025 🔍
Sources
Vendor: foxitsoftware.comAdvisory: ZDI-23-1869
Status: Confirmed
CVE: CVE-2023-51556 (🔍)
GCVE (CVE): GCVE-0-2023-51556
GCVE (VulDB): GCVE-100-248647
Entry
Created: 12/21/2023 07:45Updated: 08/13/2025 23:25
Changes: 12/21/2023 07:45 (38), 08/13/2025 23:25 (28)
Complete: 🔍
Cache ID: 216::103
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