CVE-2023-6361
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 · uneditedA vulnerability has been discovered in Winhex affecting version 16.1 SR-1 and 20.4. This vulnerability consists of a buffer overflow controlling the Structured Exception Handler (SEH) registers. This could allow attackers to execute arbitrary code via a long filename argument.
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 confidenceWinhex contains a buffer overflow vulnerability where a long filename argument can overwrite the Structured Exception Handler (SEH) registers. This SEH overwrite can be leveraged to achieve arbitrary code execution on the affected system. The vulnerability affects versions 16.1 SR-1 and 20.4.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- Low
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/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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Verify Winhex installation existsCheck common installation directories or use system search to locate winhex.exe. Common paths include C:\Program Files\WinHex\ or C:\Program Files (x86)\WinHex\Affected if Winhex executable is found on the system
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Determine installed Winhex versionRight-click winhex.exe, select Properties, and check the Details tab for Product Version, or run winhex.exe and look in Help > AboutAffected if Version is 16.1 SR-1 or 20.4 exactly, or falls within this range without vendor patch applied
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Confirm vulnerability trigger conditionThe vulnerability triggers when Winhex opens or processes a file that has an excessively long filenameAffected if User opens files with unusually long filenames through Winhex and the application processes them without crashing or with unexpected behavior
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Check for signs of exploitation attemptsReview system or endpoint protection logs for any Winhex process anomalies, crashes, or suspicious activity related to SEH overwrite patternsAffected if Logs show Winhex crashing with memory corruption indicators or unexpected code execution patterns
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Verify file processing contextDetermine if Winhex is used to open files from varied or untrusted sources, as this is the attack vectorAffected if Users routinely open files from external or untrusted sources using Winhex
The system is affected if Winhex version 16.1 SR-1 or 20.4 is installed and users open files through Winhex, particularly from untrusted sources, as the long filename buffer overflow can overwrite SEH registers to achieve code execution.
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 dataApply vendor patches when available; until then, avoid opening Winhex with files from untrusted sources and consider using endpoint protection to monitor for exploitation attempts.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2023-6361 — 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-2023-6361 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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