CVE-2022-22658
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 input validation issue was addressed with improved input validation. This issue is fixed in iOS 16.0.3. Processing a maliciously crafted email message may lead to a denial-of-service.
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 · moderate confidenceAn input validation vulnerability in iOS Mail allows remote denial-of-service when processing a maliciously crafted email message. The vulnerability stems from insufficient validation of email content, causing the mail application to crash or become unresponsive.
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< 16.0.3CVSS 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
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/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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Check iOS version on the deviceGo to Settings > General > About > Version, or use Finder/iTunes to check the iOS version, or run: idevicesyslog (if tools available) to retrieve version infoAffected if The iOS version is lower than 16.0.3 (for example, 16.0.2, 15.x, 14.x, etc.)
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Verify Mail application is enabledCheck if the Mail app is installed and enabled on the device. Navigate to Settings > Mail to confirm the mail account is configured and Mail is activeAffected if Mail is enabled and configured with at least one email account
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Confirm device receives email directlyDetermine if the device receives email through the native iOS Mail app (not through a third-party email client). Check Settings > Mail > Accounts for active accountsAffected if The native iOS Mail app handles email delivery and the device is connected to receive email messages
The environment is affected if the iOS device runs a version lower than 16.0.3 and has the native Mail app enabled to receive email messages.
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 · scoped16.0.3
Update iOS devices to version 16.0.3 or later to apply the vendor patch. Consider implementing email filtering at the mail server level to reject malformed messages before they reach end-user devices.
iOS 16.0.3
- Back up your iPhone data using iCloud or your computer
- Ensure your iPhone is connected to Wi-Fi and plugged into power
- Go to Settings > General > Software Update
- Download and install iOS 16.0.3 or later
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation1.0 h
- Implementation2.0 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 $1,664.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-22658 — 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-2022-22658 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