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": "2026-08-11T18:17:29.723Z",
  "pubdate": "2026-08-11T18:17:29.723Z",
  "executiveSummary": "Adobe Lightroom Classic is impacted by a memory corruption flaw specifically classified as an out-of-bounds write vulnerability. This security deficiency exposes the host system to arbitrary code execution within the security context of the currently logged-in user. The existence of this vulnerability presents significant risk implications, potentially allowing an attacker to compromise application integrity and execute native instructions on the targeted endpoint. Exploitation of this flaw requires specific user interaction, mandating that a prospective victim actively open a maliciously crafted file using the vulnerable software. The attack surface relies on the application parsing untrusted file formats without adequate bounds checking or memory validation mechanisms. Absent mitigation, successful exploitation compromises the confidentiality, integrity, and availability of the affected system.",
  "technicalDetails": "The vulnerability stems from improper bounds validation during the parsing or processing of specific file structures within Adobe Lightroom Classic. Specifically, an out-of-bounds write occurs when the application attempts to write data past the allocated boundaries of an internal buffer in memory. This memory corruption condition is triggered when the software ingests a specially crafted malicious file provided by an external source. The root cause is rooted in insufficient length checks and validation routines applied to incoming data streams or structural metadata within the targeted file format. The attack flow commences when a victim user is induced to open the malicious file via the application interface. As the software parses the malformed components, the out-of-bounds write condition executes, allowing attacker-controlled data to overwrite adjacent memory segments. Depending on the precise layout of the heap or stack, this memory overwriting primitive can manipulate critical application pointers, function return addresses, or underlying data structures. By carefully crafting the contents of the malicious file, an adversary can achieve arbitrary code execution, enabling the injected payload to run with the privileges of the current user. The vulnerability does not require prior authentication, nor does it require elevated system privileges to exploit, but it necessitates local user interaction to process the malicious payload. Network exposure is indirect, as the delivery mechanism depends on file transfer vectors such as email attachments, malicious web downloads, or shared storage repositories."
}