CVE-2026-27290: Adobe FrameMaker RCE Vulnerability

CVE-2026-27290 Overview

Adobe Framemaker versions 2022.8 and earlier are affected by an Untrusted Search Path vulnerability (CWE-426) that allows attackers to execute arbitrary code in the context of the current user. The vulnerability occurs when the application uses a search path to locate critical resources such as programs, enabling an attacker to modify that search path to point to a malicious program, which the targeted application would then execute.

Critical Impact

This vulnerability enables local code execution without user interaction, allowing attackers to run arbitrary code with the privileges of the current user. The scope-changing nature of this vulnerability means that exploitation can impact resources beyond the vulnerable component.

Affected Products

• Adobe Framemaker versions 2022.8 and earlier
• Adobe Framemaker running on Microsoft Windows
• All Adobe Framemaker 2022 release branch installations

Discovery Timeline

• April 14, 2026 - CVE-2026-27290 published to NVD
• April 15, 2026 - Last updated in NVD database

Technical Details for CVE-2026-27290

Vulnerability Analysis

This Untrusted Search Path vulnerability (CWE-426) in Adobe Framemaker stems from the application's improper handling of search paths when locating executable resources. When Framemaker attempts to load dynamic libraries or execute programs, it follows a predefined search path sequence. If this search path includes directories where attackers can write files, they can plant malicious executables that the application will load and execute.

The vulnerability is particularly concerning because it does not require user interaction for exploitation. An attacker with local access to the system can manipulate the search path or place malicious files in directories that Framemaker searches, leading to code execution with the privileges of the user running the application.

Root Cause

The root cause lies in Adobe Framemaker's failure to properly validate or restrict the directories used in its search path for loading programs and resources. The application relies on an untrusted search path mechanism that does not adequately verify the integrity or authenticity of the executables it loads.

Specifically, when Framemaker searches for DLLs or executables, it may search in directories that are writable by non-privileged users, including the current working directory or other user-controllable locations. This behavior allows attackers to perform DLL hijacking or binary planting attacks.

Attack Vector

The attack vector is local, requiring the attacker to have write access to directories included in the application's search path. Exploitation typically involves:

1. Identifying the directories that Adobe Framemaker searches when loading resources
2. Placing a malicious executable or DLL with a name that matches what Framemaker expects to load
3. Waiting for the application to be launched, at which point it loads and executes the attacker's malicious code

The attacker's code then runs with the same privileges as the Framemaker process, enabling further system compromise. The scope-change characteristic indicates that successful exploitation can impact resources beyond the vulnerable Framemaker application itself.

Detection Methods for CVE-2026-27290

Indicators of Compromise

• Unusual DLL or executable files appearing in Adobe Framemaker installation directories or current working directories
• Unexpected process spawning from the Framemaker application process
• File creation or modification events in directories within the application search path
• Suspicious network connections or system calls originating from Framemaker processes

Detection Strategies

• Monitor for new or modified files in Adobe Framemaker's installation directory and common DLL search paths
• Implement application whitelisting to detect unauthorized executables loaded by Framemaker
• Use endpoint detection and response (EDR) solutions to monitor for suspicious child processes spawned by Framemaker
• Audit file write operations to directories in the system PATH and application directories

Monitoring Recommendations

• Enable Windows Security Event logging for process creation (Event ID 4688) with command line auditing
• Configure Sysmon to monitor for DLL loading events from unexpected locations
• Monitor for changes to system or user PATH environment variables
• Set up alerts for any modifications to files in Adobe Framemaker installation directories

How to Mitigate CVE-2026-27290

Immediate Actions Required

• Update Adobe Framemaker to the latest patched version as specified in the security advisory
• Restrict write permissions on directories in the application search path to administrators only
• Review and harden file system permissions on the Framemaker installation directory
• Consider running Framemaker with reduced privileges using Windows security policies

Patch Information

Adobe has released a security update to address this vulnerability. Refer to the Adobe Security Advisory APSB26-36 for detailed patch information and download instructions. Organizations should prioritize applying this patch to all affected Adobe Framemaker installations.

Workarounds

• Remove write permissions for non-administrative users from all directories in the system PATH
• Configure the application to run from a controlled, administrator-only directory
• Use Windows Defender Application Control (WDAC) or AppLocker to restrict which executables can run from user-writable directories
• Implement least-privilege principles for user accounts that run Adobe Framemaker
• Consider deploying the application in a virtualized or sandboxed environment until patching is complete