CVE-2026-48275: Adobe Illustrator RCE Vulnerability

CVE-2026-48275 Overview

CVE-2026-48275 is an Untrusted Search Path vulnerability [CWE-426] affecting Adobe Illustrator on Microsoft Windows. Attackers can achieve arbitrary code execution in the context of the current user by exploiting how Illustrator resolves library or resource paths. Exploitation requires user interaction: a victim must open a malicious file. The vulnerability has a changed scope, meaning successful exploitation impacts resources beyond the vulnerable component itself. Adobe published a fix in security advisory APSB26-79.

Critical Impact
Successful exploitation results in arbitrary code execution in the context of the current user, with high impact to confidentiality, integrity, and availability.

Affected Products

Adobe Illustrator (versions listed in Adobe advisory APSB26-79)
Microsoft Windows platforms running affected Illustrator builds
User workstations with Illustrator installed alongside writable directories in the search path

Discovery Timeline

2026-07-14 - CVE-2026-48275 published to the National Vulnerability Database (NVD)
2026-07-16 - Last updated in NVD database

Technical Details for CVE-2026-48275

Vulnerability Analysis

The flaw is classified under [CWE-426] Untrusted Search Path. Adobe Illustrator loads libraries or supporting files from directories that an attacker can influence. When a victim opens a crafted file, Illustrator resolves a dependency from an attacker-controlled location instead of the trusted system path. The loaded code then executes with the privileges of the current user.

Because the CVSS scope is changed, code loaded through this path can affect components outside the vulnerable process boundary. This typically indicates that execution extends into resources with different security authorities on the host.

Root Cause

The root cause is improper control of the search path used by Illustrator when resolving dynamically loaded modules or auxiliary files. Windows applications that fail to specify absolute paths or that include writable directories early in the search order are susceptible to binary planting and DLL search-order hijacking patterns that map to [CWE-426].

Attack Vector

The attack vector is local and requires user interaction. An attacker delivers a malicious file, such as an Illustrator project or a companion resource, packaged alongside a rogue library in a directory Illustrator will search. When the victim opens the file, Illustrator loads the attacker-supplied module and executes its code. Common delivery methods include phishing attachments, malicious archives, and removable media containing both the document and the planted binary.

No public proof-of-concept exploit is currently listed for CVE-2026-48275, and it is not tracked on the CISA Known Exploited Vulnerabilities catalog.

Detection Methods for CVE-2026-48275

Indicators of Compromise

Illustrator process (Illustrator.exe) loading unsigned or unexpected DLLs from user-writable directories such as Downloads, Temp, or archive extraction folders
Creation of DLL files in the same directory as a recently opened .ai, .eps, or related Illustrator project file
Child processes spawned by Illustrator.exe that perform network egress, credential access, or persistence operations

Detection Strategies

Hunt for module loads by Illustrator.exe where the image path resides outside Program Files or Adobe's signed install directories
Alert on Illustrator opening files from removable media or extracted archives that also contain DLLs matching known Adobe module names
Correlate file-write events dropping DLLs into user directories with subsequent Illustrator process launches from the same directory

Monitoring Recommendations

Enable Windows Sysmon Event ID 7 (Image Loaded) with filters targeting Adobe processes
Review EDR telemetry for unsigned image loads and cross-directory execution originating from Illustrator
Monitor email and web gateways for archives combining Illustrator project files with executable content

How to Mitigate CVE-2026-48275

Immediate Actions Required

Apply the patched Illustrator version referenced in Adobe Security Advisory APSB26-79
Instruct users not to open Illustrator files from untrusted sources or extract them into directories containing unknown binaries
Audit endpoints for legacy Illustrator installations that remain on unsupported versions

Patch Information

Adobe addressed CVE-2026-48275 in the update described in advisory APSB26-79. Administrators should deploy the fixed release through Adobe Creative Cloud or their managed software distribution tooling. Refer to Adobe Security Advisory APSB26-79 for exact fixed version numbers.

Workarounds

Open Illustrator files only from trusted, controlled directories that do not contain user-writable binaries
Enforce Windows application control policies, such as AppLocker or WDAC, to block unsigned DLL loads from user-writable paths
Extract received archives to a sanitized directory and inspect for unexpected DLL or executable files before opening any document

bash

# Example AppLocker DLL rule set to block unsigned DLLs in user-writable paths
New-AppLockerPolicy -RuleType Dll -User Everyone `
  -RuleNamePrefix "Block-UserDLL" `
  -Optimize -Xml | Set-AppLockerPolicy -LDAP $null