CVE-2018-18058
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 · uneditedAn issue was discovered in Bitdefender Engines before 7.76662. A vulnerability has been discovered in the iso.xmd parser that results from a lack of proper validation of user-supplied data, which can result in a division-by-zero circumstance. Paired with other vulnerabilities, this can result in denial-of-service. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
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 confidenceA division-by-zero vulnerability exists in Bitdefender Engines' iso.xmd parser due to insufficient validation of user-supplied data. The vulnerability can be triggered when a user opens a malicious ISO file or visits a malicious webpage, potentially causing a denial-of-service condition. This issue affects versions prior to 7.76662.
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< 7.76662CVSS 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
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/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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Locate the Bitdefender Scan Engine versionOpen the Bitdefender product interface (e.g., Antivirus, Total Security, Endpoint Security) and navigate to Help > About or Settings > About to view the installed engine version number. Alternatively, check the product's support or logs section for version information.Affected if The displayed version is a 7.x.xxxx number less than 7.76662 (for example, 7.76661, 7.75000, or any 7.x version below 7.76662)
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Confirm ISO scanning functionality is activeIn the Bitdefender product settings, go to Protection or Scan Options and verify whether scanning of ISO disk image files is enabled. Look for options related to 'ISO files', 'disk images', or 'archive scanning'.Affected if ISO file scanning is turned on or set to scan by default, and the engine version is below 7.76662
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Check if the iso.xmd parser module is presentExamine the Bitdefender installation directory or scan engine files for the iso.xmd component. This file is typically located in the engine or signatures folder within the product installation path.Affected if The iso.xmd file exists in the installation and the engine version is below 7.76662
The environment is affected if the installed Bitdefender Scan Engine version is any 7.x version prior to 7.76662 and ISO file scanning capabilities are enabled.
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 data7.76662
Update Bitdefender Engines to version 7.76662 or later to receive the patch for this vulnerability. Users should avoid opening untrusted ISO files or visiting suspicious websites until the update is applied.
- Consultation4.0 h
- Implementation8.0 h
- Testing12.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-18058 — 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-2018-18058 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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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data