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macOSOperating system · Apple

CVE-2025-31237

HIGH · 7.5 CVSS v3.1 Published 2025-05-12
Fix available
A fix is available. Upgrade to 13.7.6 / 14.7.6 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

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 · unedited
This issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.5, macOS Sonoma 14.7.6, macOS Ventura 13.7.6. Mounting a maliciously crafted AFP network share may lead to system termination.

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 confidence

A vulnerability in macOS AFP (Apple Filing Protocol) file sharing allows a maliciously crafted AFP network share to cause system termination (denial of service). The issue was addressed with improved input validation checks in the affected macOS versions.

MitigationApply the available macOS security updates (15.5 for Sequoia, 14.7.6 for Sonoma, or 13.7.6 for Ventura) to patch the vulnerability. Until patched, avoid mounting untrusted or unknown AFP network shares.

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
macOSOperating system
Affected:< 13.7.6>= 14.0, < 14.7.6>= 15.0, < 15.5

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
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 checks

Work through these to decide whether this CVE applies to you.

  1. Check macOS version
    Run `sw_vers -productVersion` in Terminal or view System Settings > About > macOS version
    Affected if The version is below 13.7.6, between 14.0-14.7.5, or between 15.0-15.4 (vulnerable)
  2. Confirm macOS release name
    Run `sw_vers -productVersionExtra` or check the OS name in System Settings > About
    Affected if The OS is Ventura (13.x), Sonoma (14.x), or Sequoia (15.x) with a version in the vulnerable range from step 1
  3. Verify AFP file sharing is enabled
    Check System Settings > General > Sharing > File Sharing, or run `launchctl list | grep -i applefileserver` in Terminal
    Affected if AFP/Apple Filing Protocol file sharing is turned ON (vulnerable only when enabled)
  4. Check for active AFP connections
    Run `mount` or examine /Network/Servers in Finder to list mounted network shares
    Affected if Any AFP network shares from untrusted sources are currently mounted

A system is affected if it runs a vulnerable macOS version (below 13.7.6, 14.0-14.7.5, or 15.0-15.4) AND has AFP file sharing enabled, especially if mounting untrusted AFP shares.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to 13.7.6 / 14.7.6 / 15.5 or later
Fixed in 13.7.614.7.615.5
Interim mitigation

Apply the available macOS security updates (15.5 for Sequoia, 14.7.6 for Sonoma, or 13.7.6 for Ventura) to patch the vulnerability. Until patched, avoid mounting untrusted or unknown AFP network shares.

Recommended fix High confidence

macOS Ventura 13.7.6, macOS Sonoma 14.7.6, or macOS Sequoia 15.5 depending on your current major version

  1. Check current macOS version: Apple menu → About This Mac → Version
  2. For macOS Ventura 13.x: Update to macOS Ventura 13.7.6 via Apple menu → System Settings → General → Software Update
  3. For macOS Sonoma 14.x: Update to macOS Sonoma 14.7.6 via Apple menu → System Settings → General → Software Update
  4. For macOS Sequoia 15.x: Update to macOS Sequoia 15.5 via Apple menu → System Settings → General → Software Update
  5. Alternatively, enable automatic updates: System Settings → General → Software Update → Automatic Updates → Keep your Mac up to date
Caveat Point releases typically have minimal breaking changes; verify critical applications are compatible before updating

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in macOS Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
Get the upgrade done

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Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-31237 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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