Description

Lightroom Classic is affected by an Integer Overflow or Wraparound 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": "2026-08-11T18:17:27.267Z",
  "pubdate": "2026-08-11T18:17:27.267Z",
  "executiveSummary": "Adobe Lightroom Classic is affected by an Integer Overflow or Wraparound vulnerability that introduces significant security risks to end users.\nThe vulnerability allows for arbitrary code execution within the security context of the currently logged-in user.\nExploitation of this flaw requires user interaction, specifically mandating that a victim opens a specially crafted malicious file using the vulnerable product.\nSuccessful exploitation could enable an attacker to execute arbitrary code, potentially leading to complete compromise of the application context, unauthorized data access, or further system infiltration depending on the user's privileges.\nOrganizations and individuals utilizing Lightroom Classic face a moderate to high risk if threat actors distribute malicious files designed to trigger the integer overflow condition.\nMitigation requires applying official vendor patches as soon as they become available and exercising caution when opening untrusted files.",
  "technicalDetails": "The vulnerability stems from an Integer Overflow or Wraparound flaw within the file parsing or handling routines of Lightroom Classic.\nInteger overflows occur when an arithmetic operation attempts to create a numeric value that is too large to be represented within the allocated storage space, leading to a wrap-around to a smaller value or zero.\nIn the context of file parsers, this miscalculation frequently leads to heap or stack-based buffer overflows when memory allocation sizes are determined using the flawed integer value while data copying operations rely on the un-truncated size.\nThe affected component is the internal file parsing module responsible for interpreting specific malicious file formats processed by Lightroom Classic.\nExploitation requires user interaction: an attacker must deliver a malformed file to the target user, who must then open it within Lightroom Classic.\nNo authentication or elevated privileges are required to initiate the attack, as the vector relies entirely on local file processing and user-initiated parsing actions.\nNetwork exposure is not strictly necessary for the primary exploitation vector if the file is delivered via physical media, email attachment, or local network shares, though web-based delivery vectors are common.\nUpon successfully parsing the malicious file, the integer wraparound triggers memory corruption conditions.\nThis memory corruption can be leveraged by a sophisticated attacker to manipulate program execution flow, resulting in arbitrary code execution in the context of the current user.\nThe post-exploitation impact includes the execution of arbitrary payloads with the permissions of the user running Lightroom Classic, potentially facilitating data exfiltration, installation of persistent malware, or lateral movement within the environment."
}