Description

Lightroom Classic is affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.8",
  "pubDate": "2026-08-11T18:17:29.573Z",
  "pubdate": "2026-08-11T18:17:29.573Z",
  "executiveSummary": "An out-of-bounds write vulnerability has been identified in Adobe Lightroom Classic, posing a severe security risk to affected systems.\nThe vulnerability arises from improper memory management during the processing of specialized file formats, allowing data to be written past the designated buffer boundaries.\nSuccessful exploitation of this flaw can lead to arbitrary code execution within the security context of the currently logged-in user, potentially compromising system integrity, confidentiality, and availability.\nThe attack vector requires user interaction, specifically necessitating that the victim open a maliciously crafted file supplied by the attacker.\nIf the malicious file is processed by a privileged user, the resulting code execution inherits those elevated privileges.\nGiven the requirement for user interaction, the primary risk involves targeted social engineering or spear-phishing campaigns designed to deliver the malicious file to unsuspecting users.",
  "technicalDetails": "The root cause of the vulnerability is an out-of-bounds write condition within the memory handling routines of Lightroom Classic when parsing untrusted file structures.\nWhen a user opens a maliciously crafted file, the application attempts to read and process specific data fields without performing adequate bounds checking or validation on the input size relative to the allocated memory buffer.\nThis absence of rigorous validation leads to a heap-based or stack-based out-of-bounds write, where input data overflows the intended buffer boundaries and corrupts adjacent memory regions.\nAn attacker can carefully craft the malicious file payload to overwrite critical control data, function pointers, or application state variables within memory.\nWhen execution flow reaches the corrupted pointers, the application is redirected to attacker-controlled shellcode or memory-resident payloads.\nBecause the execution occurs in the context of the current user, the payload inherits the exact permissions and privileges associated with the user running Lightroom Classic at the time of the incident.\nThe exploitation mechanism does not require network exposure or authentication, as the attack is locally triggered through the ingestion and parsing of a malicious file.\nPost-exploitation impact includes full code execution capabilities, allowing the threat actor to deploy secondary payloads, establish persistence, access sensitive user data, or pivot further into the underlying host environment."
}