Arbitrary code execution via malicious-file integer overflow
Published Aug 11, 2026 · Updated Aug 11, 2026
Integer overflow in Adobe Lightroom Classic 15.4 and earlier on Windows allows attackers to execute code when a user opens a malicious file. Adobe identifies an integer overflow or wraparound during malicious-file handling but does not disclose the parser, field, or unchecked arithmetic operation. A victim must open the file; successful exploitation runs attacker-controlled code with the victim's current-user privileges on Windows.
Summary
What happened
Integer overflow in Adobe Lightroom Classic 15.4 and earlier on Windows allows attackers to execute code when a user opens a malicious file. Adobe identifies an integer overflow or wraparound during malicious-file handling but does not disclose the parser, field, or unchecked arithmetic operation. A victim must open the file; successful exploitation runs attacker-controlled code with the victim's current-user privileges on Windows.
The record
- CVE
- CVE-2026-47940
- Published
- Aug 11, 2026
- Updated
- Aug 11, 2026
- Vendor
- Adobe
- Product
- Lightroom Classic
- Classifications
- CWE-190, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 11, 2026CVE publishedPublication date reported by the CVE source.
- Aug 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=15.4, 15.4.1, 15.3, 15.3.1, 15.2, 15.2.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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