CVE-2026-48370: Adobe Media Encoder RCE Vulnerability

CVE-2026-48370 Overview

Adobe Media Encoder contains an out-of-bounds write vulnerability [CWE-787] that allows arbitrary code execution in the context of the current user. An attacker can craft a malicious media file that triggers memory corruption when parsed by the application. Successful exploitation requires user interaction, specifically that the victim opens the malicious file.

The vulnerability affects Adobe Media Encoder installations and is addressed in Adobe Security Advisory APSB26-72. Because Media Encoder is commonly used in creative production pipelines, compromised workstations can serve as an entry point into broader corporate networks.

Critical Impact
Successful exploitation grants arbitrary code execution with the privileges of the logged-in user, enabling malware installation, credential theft, and lateral movement.

Affected Products

Adobe Media Encoder (see Adobe advisory APSB26-72 for affected versions)
Windows installations of Adobe Media Encoder
macOS installations of Adobe Media Encoder

Discovery Timeline

2026-07-14 - CVE-2026-48370 published to NVD
2026-07-17 - Last updated in NVD database

Technical Details for CVE-2026-48370

Vulnerability Analysis

The flaw is an out-of-bounds write in Adobe Media Encoder's media parsing routines. When the application processes a specially crafted file, it writes data past the boundary of an allocated buffer. This memory corruption can overwrite adjacent structures, function pointers, or return addresses.

An attacker who controls the overwritten memory can redirect execution flow to attacker-supplied code. The code runs with the same privileges as the user who opened the file. Local attack vector combined with required user interaction limits mass exploitation, but targeted phishing campaigns against media production teams remain a realistic threat model.

Root Cause

Out-of-bounds write vulnerabilities [CWE-787] occur when software writes data beyond the intended boundaries of a memory buffer. In Media Encoder, the root cause typically involves missing or incorrect bounds checks during parsing of container formats, codec-specific structures, or metadata fields within media files. Adobe has not publicly disclosed the specific parser or file format involved.

Attack Vector

Exploitation requires an attacker to deliver a malicious media file to the victim and convince them to open it in Media Encoder. Common delivery channels include phishing emails with attached project files, compromised shared network storage, and malicious downloads posing as stock footage or client deliverables. Because Media Encoder often runs on workstations belonging to creative professionals with access to intellectual property, successful compromise can yield high-value data.

No public proof-of-concept exploit code is currently available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Detection Methods for CVE-2026-48370

Indicators of Compromise

Unexpected child processes spawned by Adobe Media Encoder.exe or AME.exe, particularly command interpreters such as cmd.exe, powershell.exe, or bash
Crash events or Windows Error Reporting entries referencing Adobe Media Encoder modules following the opening of untrusted media files
Outbound network connections initiated by the Media Encoder process to unfamiliar destinations

Detection Strategies

Monitor process creation telemetry for Media Encoder spawning scripting engines or LOLBins
Alert on Media Encoder processes performing file writes to autorun locations or user startup folders
Correlate email attachment delivery of media project files with subsequent Media Encoder execution

Monitoring Recommendations

Enable process command-line logging and script block logging on workstations running Adobe Creative Cloud applications
Ingest endpoint telemetry into a centralized data lake to hunt for anomalous behavior across creative workstations
Track application crash telemetry for Media Encoder to identify potential exploitation attempts

How to Mitigate CVE-2026-48370

Immediate Actions Required

Apply the Adobe security update referenced in Adobe Security Advisory APSB26-72 to all Media Encoder installations
Restrict opening of media files received from untrusted or unverified sources until patching is complete
Inventory all endpoints with Adobe Media Encoder installed and prioritize patching for internet-facing users

Patch Information

Adobe has released a security update addressing this vulnerability. Refer to Adobe Security Advisory APSB26-72 for the fixed version numbers and download links. Deploy the update through Adobe Creative Cloud Desktop or enterprise deployment tooling.

Workarounds

Configure email gateways to inspect and quarantine unsolicited media project files and uncommon codec containers
Enforce least-privilege user accounts so exploitation does not yield administrative access
Apply application allowlisting to prevent Media Encoder from spawning interpreters or unsigned binaries

bash

# Verify installed Adobe Media Encoder version on Windows
reg query "HKLM\SOFTWARE\Adobe\Adobe Media Encoder" /s | findstr /i version

# Verify installed Adobe Media Encoder version on macOS
mdls -name kMDItemVersion "/Applications/Adobe Media Encoder [YEAR]/Adobe Media Encoder [YEAR].app"