CVE-2026-75649: Bridge Heap-based Buffer Overflow Vulnerability

CVE-2026-75649 Overview

CVE-2026-75649 is a heap-based buffer overflow vulnerability in Adobe Bridge that enables arbitrary code execution in the context of the current user. Exploitation requires user interaction: a victim must open a malicious file crafted by an attacker. The flaw is classified under [CWE-122] (Heap-based Buffer Overflow) and carries a local attack vector with high impact to confidentiality, integrity, and availability.

Critical Impact
Successful exploitation grants attackers arbitrary code execution with the privileges of the logged-in user, enabling malware installation, data theft, or lateral movement from the compromised workstation.

Affected Products

Adobe Bridge (versions specified in the Adobe Bridge Security Advisory APSB26-148)

Discovery Timeline

2026-09-22 - CVE-2026-75649 published to NVD
2026-09-23 - Last updated in NVD database

Technical Details for CVE-2026-75649

Vulnerability Analysis

Adobe Bridge contains a heap-based buffer overflow that occurs during processing of a specially crafted file. When the application parses attacker-controlled data, it writes beyond the bounds of an allocated heap buffer. This corruption can overwrite adjacent heap metadata or object pointers, giving an attacker a path to hijack execution flow.

The vulnerability requires the victim to open a malicious file, so delivery typically relies on phishing, malicious downloads, or shared project files. Once triggered, the resulting code runs at the privilege level of the current user, so a standard user account limits blast radius but does not prevent compromise.

Root Cause

The root cause is improper validation of input sizes or field lengths during file parsing, allowing a write past the end of a heap-allocated buffer. Heap corruption vulnerabilities of this class ([CWE-122]) commonly stem from missing bounds checks, integer miscalculations preceding a memory copy, or trust in attacker-supplied length fields embedded within file metadata.

Attack Vector

The attack vector is local and requires user interaction. An attacker crafts a malicious file in a format handled by Adobe Bridge and delivers it through email, a compromised website, or a shared file service. When the victim opens the file in Bridge, the parser triggers the overflow. No network exposure is required, and no privileges are needed prior to exploitation.

Technical details on the specific file format and affected parser are not disclosed in the public advisory. Refer to the Adobe Bridge Security Advisory for vendor-provided information.

Detection Methods for CVE-2026-75649

Indicators of Compromise

Adobe Bridge process (Bridge.exe) spawning unexpected child processes such as cmd.exe, powershell.exe, or rundll32.exe.
Crashes or unexpected termination of Adobe Bridge shortly after opening a file from an untrusted source.
Suspicious file writes or persistence entries created by the Bridge process following the opening of externally sourced media or asset files.

Detection Strategies

Monitor endpoint telemetry for anomalous process lineage originating from Adobe Bridge, particularly executions of scripting hosts or LOLBins.
Alert on Adobe Bridge process crashes logged in the Windows Application Event Log with faulting module indicators consistent with heap corruption.
Correlate file-open events for uncommon or externally sourced file types with subsequent outbound network connections from the Bridge process.

Monitoring Recommendations

Enable command-line and process-creation auditing on workstations running Adobe Bridge to capture exploitation artifacts.
Track newly created files in user-writable paths (for example, %APPDATA% and %TEMP%) written by Bridge.exe.
Ingest endpoint and application logs into a centralized analytics platform to enable retrospective hunting against Bridge-related activity.

How to Mitigate CVE-2026-75649

Immediate Actions Required

Apply the patched version of Adobe Bridge published in the Adobe Bridge Security Advisory APSB26-148 as soon as it is available in your environment.
Instruct users to avoid opening Bridge project files, asset bundles, or media files received from untrusted sources until patching is complete.
Inventory endpoints with Adobe Bridge installed and prioritize patching for users who routinely handle external creative assets.

Patch Information

Adobe has published a security bulletin addressing this vulnerability. Refer to the Adobe Bridge Security Advisory APSB26-148 for the fixed version numbers, platform coverage, and update instructions.

Workarounds

Restrict Adobe Bridge usage to trusted, internally produced files while patches are being deployed.
Enforce least privilege on user accounts to limit the impact of code execution in the user context.
Use application allowlisting or attack surface reduction rules to block Adobe Bridge from spawning script interpreters and command shells.