CVE-2025-9327VulnerabilityPublished 2 Sep 2025

CVE-2025-9327: 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 25 Oct 2026, 19:02 UTC

CVSS 3.0 base score

3.3Low

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 14% 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 Sep 2025
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 2026-10-25.

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 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 =2024.4.0.27683	Fixed in–

AI-suggested

European organizations should implement the following specific mitigations: 1) Update Foxit PDF Reader to the latest version as soon as a patch addressing CVE-2025-9327 is released by the vendor. 2) Employ application whitelisting and restrict the execution of untrusted or unknown PDF files, especially those containing embedded 3D content like PRC files. 3) Educate users about the risks of opening PDF attachments or links from untrusted sources to reduce the likelihood of successful exploitation via social engineering. 4) Utilize endpoint detection and response (EDR) tools to monitor for anomalous behavior associated with PDF reader processes, such as unexpected memory access patterns or network connections. 5) Consider disabling or restricting PRC file parsing features in Foxit PDF Reader if feasible, or use alternative PDF readers with a lower attack surface for handling sensitive documents. 6) Implement network-level protections such as sandboxing or email gateway scanning to detect and block malicious PDF files before reaching end users. These targeted measures go beyond generic advice by focusing on the specific attack vector and exploitation requirements of this vulnerability.

Description

Foxit PDF Reader PRC 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 PRC 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 buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-26774.

Impact

For European organizations, this vulnerability poses a moderate risk primarily to confidentiality of information. Since Foxit PDF Reader is widely used across enterprises and government agencies in Europe for handling PDF documents, an attacker could leverage this flaw to extract sensitive data from memory, potentially including fragments of documents or application data. The requirement for user interaction limits mass exploitation but targeted spear-phishing campaigns or malicious document distribution could be effective attack vectors. The possibility of chaining this vulnerability with others to achieve code execution raises concerns for advanced persistent threat (APT) actors targeting high-value European entities. Confidentiality breaches could lead to exposure of intellectual property, personal data protected under GDPR, or internal communications. However, the lack of impact on integrity or availability and the low CVSS score suggest the immediate threat level is limited. Organizations handling sensitive or regulated data should still consider this vulnerability significant due to the potential for information leakage and subsequent escalation.

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

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 9 Sep 2025, 21:53 UTC

WeaknessesCWE-125

Technical details

References

Community reviews

Related threats