CVE-2023-42869
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 · uneditedMultiple memory corruption issues were addressed with improved input validation. This issue is fixed in macOS Ventura 13.4, iOS 16.5 and iPadOS 16.5. Multiple issues in libxml2.
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 confidenceThis vulnerability involves multiple memory corruption issues in libxml2, a widely-used XML parsing library, addressed through improved input validation. The issues can be triggered by processing specially crafted XML input, potentially allowing remote code execution or denial of service. Affected systems include macOS Ventura versions prior to 13.4, iOS prior to 16.5, and iPadOS prior to 16.5.
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< 16.5< 16.5< 13.4CVSS 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
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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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Check macOS versionRun 'sw_vers -productVersion' in Terminal or open System Settings > General > AboutAffected if Version is earlier than 13.4 (such as 13.0, 13.1, 13.2, 13.3)
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Check iOS versionOpen Settings > General > About on the iPhone deviceAffected if Version is earlier than 16.5 (such as 15.x, 16.0-16.4)
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Check iPadOS versionOpen Settings > General > About on the iPad deviceAffected if Version is earlier than 16.5 (such as 15.x, 16.0-16.4)
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Identify XML processing applicationsReview installed applications that handle XML files, such as browsers, document viewers, or custom software that parses XML inputAffected if Any application that processes untrusted XML content is in use on an affected OS version
A system is affected if it runs macOS earlier than 13.4, iOS earlier than 16.5, or iPadOS earlier than 16.5, and processes XML content with applications on that device.
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.
dbcve · scoped13.416.5
Apply the vendor-supplied updates: upgrade to macOS Ventura 13.4 or later, iOS 16.5 or later, and iPadOS 16.5 or later. Organizations should verify which devices in their fleet are running affected versions and schedule patching accordingly.
iOS 16.5, iPadOS 16.5, macOS Ventura 13.4
- Back up your device before updating.
- For iOS/iPadOS devices: Go to Settings > General > Software Update, then download and install iOS 16.5 or iPadOS 16.5.
- For macOS devices: Go to System Settings > General > Software Update, then download and install macOS Ventura 13.4.
- After updating, verify the version in Settings/About to confirm the update was successful.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,696.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-42869 — 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-2023-42869 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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