VulnerabilityPublished 2 Apr 2024Updated 2 Aug 2024

CVE-2024-30363: Foxit PDF Reader · Out-of-bounds Read

Affects Foxit PDF ReaderSource CVE Database V5

Not known to be exploited · CVSS 3.3 Low.

Data as of 26 Oct 2026, 11:42 UTC

CVSS 3.0 base score

3.3Low

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.6% chance of exploitation in 30 days – higher than 51% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Attack Vector: Local
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Scope: Unchanged
Confidentiality: Low
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 2 Apr 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Foxit PDF Reader	Affected =2023.3.0.23028	Fixed in–

AI-suggested

Organizations should implement the following specific mitigations: 1) Restrict or monitor the use of Foxit PDF Reader version 2023.3.0.23028, especially in environments handling untrusted PDFs. 2) Educate users to avoid opening PDFs from unknown or untrusted sources and to be cautious with links leading to PDF files. 3) Employ application whitelisting or sandboxing techniques to limit the impact of any exploitation within the PDF reader process. 5) Use network security controls to block access to known malicious sites that could host exploit PDFs. 6) Consider deploying endpoint detection and response (EDR) solutions capable of detecting anomalous behavior related to PDF reader exploitation. 7) If feasible, temporarily restrict or replace Foxit PDF Reader with alternative PDF readers that are not affected until a patch is released. These steps go beyond generic advice by focusing on user behavior, process isolation, and proactive monitoring tailored to this vulnerability's characteristics.

Description

Foxit PDF Reader U3D File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information 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 parsing of U3D files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-23008.

Impact

The primary impact of CVE-2024-30363 is the potential disclosure of sensitive information from the memory space of the Foxit PDF Reader process. This could include fragments of documents, user data, or other information present in memory at the time of exploitation. Although the vulnerability alone does not allow code execution or system compromise, attackers could chain it with other vulnerabilities to escalate privileges or execute arbitrary code, increasing the risk significantly. Organizations relying on Foxit PDF Reader for document handling, especially those processing untrusted or external PDFs, face risks of data leakage. This could affect confidentiality of sensitive documents and potentially expose internal information. The requirement for user interaction limits the scope somewhat, but phishing or social engineering campaigns could be used to trick users into opening malicious files. The low CVSS score indicates limited direct impact, but the potential for combined exploitation means organizations should not ignore this vulnerability.

CWE-125Out-of-bounds Read (opens in a new tab)
Base weaknessCWE Top 25 (2025): #8
The product reads data past the end, or before the beginning, of the intended buffer.
Implementation · Input Validation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
Architecture and Design · Language Selection
Use a language that provides appropriate memory abstractions.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
Attack patterns
Overread Buffers (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Feb 2026, 17:58 UTC

WeaknessesCWE-125

Technical details

References

Community reviews

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