CVE-2023-27768 in PDFelement
Summary
by MITRE • 04/04/2023
An issue found in Wondershare Technology Co.,Ltd PDFelement v9.1.1 allows a remote attacker to execute arbitrary commands via the pdfelement-pro_setup_full5239.exe file.
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Analysis
by VulDB Data Team • 11/23/2025
The vulnerability identified as CVE-2023-27768 represents a critical remote code execution flaw within Wondershare Technology Co.,Ltd PDFelement version 9.1.1. This security weakness resides in the installation process of the software, specifically within the pdfelement-pro_setup_full5239.exe file which serves as the primary installer package. The flaw enables malicious actors to remotely execute arbitrary code on affected systems simply by enticing users to download and execute the compromised installer. This represents a significant risk to enterprise environments where users may inadvertently download and run malicious payloads from untrusted sources, particularly in scenarios where software updates are automatically downloaded or where users lack proper security awareness training.
The technical nature of this vulnerability stems from improper input validation and unsafe execution practices within the installer component of PDFelement. When the malicious installer is executed, it likely employs techniques that bypass standard security controls or leverages trusted path execution methods to gain elevated privileges on the target system. This vulnerability aligns with CWE-78, which addresses improper neutralization of special elements used in OS commands, and may also relate to CWE-121, concerning stack-based buffer overflow conditions that can occur during installation processes. The attack vector involves a remote delivery mechanism where an attacker can modify or replace the legitimate installer with a malicious version, potentially through supply chain compromise or by exploiting weak integrity checks in the software distribution system.
From an operational impact perspective, this vulnerability poses severe risks to organizations relying on PDFelement for document management and editing tasks. The remote code execution capability allows attackers to establish persistent access, escalate privileges, and potentially move laterally within network environments. Systems running the vulnerable version become potential entry points for broader attacks, especially in enterprise settings where users may have administrative rights or where the software is deployed across multiple endpoints. The vulnerability can be exploited through various delivery mechanisms including phishing emails, malicious websites, or compromised software repositories, making it particularly dangerous for organizations that rely on automated software updates or centralized deployment strategies.
Organizations should immediately implement multiple layers of defense to mitigate this vulnerability. The primary recommendation involves discontinuing the use of the affected PDFelement version 9.1.1 and applying the vendor-provided patch or upgrade to a secure version. Network segmentation and application whitelisting controls should be implemented to prevent execution of unauthorized installer files. Security awareness training programs must be enhanced to educate users about the dangers of downloading and executing software from untrusted sources. Additionally, organizations should conduct thorough vulnerability assessments of their software inventory to identify other potentially vulnerable applications that may share similar installation flaws. The ATT&CK framework categorizes this type of vulnerability under T1203, which covers Exploitation for Client Execution, and T1059, which addresses Command and Scripting Interpreter, highlighting the need for comprehensive endpoint detection and response capabilities to identify and block exploitation attempts.