EUVD-2026-56837
GHSA-j3q8-4mqq-xmmg
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
File-triggered local attack requires victim interaction (UI:R, AV:L); attacker needs no privileges (PR:N); full process compromise gives C:H/I:H/A:H with no scope change.
Primary rating from Vendor (adobe).
CVSS VectorVendor: adobe
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Out-of-bounds write in Adobe Lightroom Classic allows arbitrary code execution under the context of the logged-in user when a victim opens a specially crafted file. All releases from 15.2 through 15.4.1 are confirmed affected; Adobe has released version 15.5 as the fix per advisory APSB26-94. No public exploit code or CISA KEV listing has been identified at time of analysis, but the combination of a concrete patch release and high CVSS impact warrants prompt remediation for any organization with creative or photography workflows.
Technical ContextAI
CWE-787 (Out-of-Bounds Write) describes a memory safety failure where a program writes data past the end of an allocated buffer. In Lightroom Classic's context, the flaw resides in file parsing logic - likely within an image format or metadata parser - where attacker-controlled content in a malicious file can corrupt adjacent memory regions. The CVSS attack vector AV:L reflects that exploitation occurs on the victim's local system when the crafted file is opened by Lightroom Classic, not via a remote network channel. The scope is unchanged (S:U), meaning the out-of-bounds write does not escape the Lightroom process boundary to compromise other processes or the OS directly, but it grants full control over the application's execution context. The tags 'Memory Corruption' and 'Buffer Overflow' corroborate the CWE-787 classification. Affected CPE data from EUVD covers Lightroom Classic versions 15.2 through 15.4.1, inclusive of minor patch releases.
RemediationAI
The primary remediation is to upgrade Adobe Lightroom Classic to version 15.5, which Adobe has confirmed as the patched release per APSB26-94 (https://helpx.adobe.com/security/products/lightroom/apsb26-94.html). Updates are available through the Adobe Creative Cloud desktop application. Where immediate upgrading is not possible, organizations should restrict users from opening image files received from untrusted or external sources directly in Lightroom Classic, and consider routing external files through a sandboxed preview or quarantine workflow before import. Disabling automatic file association for uncommon or attacker-favored formats (e.g., raw camera formats from unknown senders) is an additional compensating control, though this may disrupt legitimate workflows. Note that these workarounds only reduce exposure - they do not eliminate it - and patching to 15.5 remains the definitive fix.
Unsafe deserialization of untrusted data in Adobe Lightroom Classic (versions ≤15.4.1) enables arbitrary code execution
Path traversal in Adobe Lightroom Classic versions up to 15.4.1 allows an attacker to read arbitrary files from the vict
Arbitrary code execution in Adobe Lightroom Classic versions up to and including 15.4.1 is achievable by tricking a vict
Out-of-bounds write in Adobe Lightroom Classic versions up to and including 15.4.1 enables arbitrary code execution in t
Arbitrary code execution in Adobe Lightroom Classic versions up to and including 15.4.1 is triggered when a victim opens
Out-of-bounds write in Adobe Lightroom Classic versions up to 15.4.1 enables arbitrary code execution in the security co
Out-of-bounds write in Adobe Lightroom Classic versions up to 15.4.1 enables arbitrary code execution in the context of
Out-of-bounds write in Adobe Lightroom Classic versions up to 15.4.1 enables arbitrary code execution in the context of
Out-of-bounds write in Adobe Lightroom Classic versions up to and including 15.4.1 allows arbitrary code execution in th
Lightroom Desktop versions 8.2 and earlier are affected by an out-of-bounds write vulnerability that could result in arb
Arbitrary code execution in Adobe Lightroom Desktop 15.1 and earlier via an out-of-bounds write vulnerability when users
Lightroom Desktop versions 7.1.2 and earlier are affected by an Untrusted Search Path vulnerability that could result in
Same weakness CWE-787 – Out-of-bounds Write
View allShare
External POC / Exploit Code
Leaving vuln.today