CVE-2020-17403
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Studio Photo 3.6.6.922. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of PSD files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated structure. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-11003.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceBuffer overflow in Foxit Studio Photo's PSD file parser caused by insufficient validation of user-supplied data, allowing an attacker to write past the end of an allocated buffer and execute arbitrary code in the context of the current process via a maliciously crafted PSD file.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 3.6.6.927CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check if Foxit Studio Photo is installedOpen Windows Settings > Apps & Features, or check the registry at HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall for an entry named 'Foxit Studio Photo'Affected if The software is listed in installed programs or registry
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Determine the installed version numberIf installed, locate the main executable (commonly in C:\Program Files\Foxit Studio Photo\ or C:\Program Files (x86)\Foxit Studio Photo\) and view its properties to see the File Version, or check the Uninstall registry key for the DisplayVersion valueAffected if The version is 3.6.6.927 or any earlier version (all versions up to and including 3.6.6.927 are affected)
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Confirm PSD file handling is availableLaunch Foxit Studio Photo and verify the application can open or process PSD (Photoshop Document) files, or check if the software registers file associations for .psd extensionsAffected if The application can open or process PSD files, enabling the vulnerable parser
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Check for recent PSD file activityReview the application Recent Files list, Windows Jump List, or examine the Windows Prefetch folder for evidence of recent PSD file processingAffected if The user has recently opened PSD files with Foxit Studio Photo, indicating the vulnerable code path was exercised
You are affected if Foxit Studio Photo version 3.6.6.927 or earlier is installed and can process PSD files.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataAvoid opening untrusted or unsolicited PSD files; apply vendor patches when available; implement file type validation and consider using sandboxing or endpoint protection for additional defense.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-17403 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2020-17403 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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