CVE-2026-20701
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 access issue was addressed with additional sandbox restrictions. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. An app may be able to connect to a network share without user consent.
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 confidenceA sandbox bypass vulnerability in macOS allows an application to connect to network shares without user consent. The issue was addressed by implementing additional sandbox restrictions in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, and macOS Tahoe 26.4.
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>= 14.0, < 14.8.5>= 15.0, < 15.7.5>= 26.0, < 26.4CVSS 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
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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.
-
Check the installed macOS versionOpen Terminal and run: sw_vers -productVersionAffected if The version returned is 14.0 to 14.8.4, 15.0 to 15.7.4, or 26.0 to 26.3 (any version below 14.8.5, 15.7.5, or 26.4)
-
Identify the macOS release nameRun: sw_vers -productVersionExtra in Terminal to see if it shows Sonoma, Sequoia, or TahoeAffected if The system is running Sonoma below 14.8.5, Sequoia below 15.7.5, or Tahoe below 26.4
-
Confirm via System SettingsOpen System Settings > General > About and read the macOS version fieldAffected if The displayed version matches any of the affected ranges listed above
A system is affected if it runs macOS Sonoma 14.0-14.8.4, Sequoia 15.0-15.7.4, or Tahoe 26.0-26.3, as these versions lack the additional sandbox restrictions that prevent unauthorized network share connections.
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 · scoped14.8.515.7.526.4
Apply the vendor-supplied macOS security updates (15.7.5, 14.8.5, or 26.4) to all affected systems to restore proper sandbox enforcement.
macOS Sonoma 14.8.5 / macOS Sequoia 15.7.5 / macOS Tahoe 26.4 (depending on your current major version)
- Identify your current macOS version by clicking the Apple menu and selecting 'About This Mac'
- Determine which fixed version applies to your current macOS: macOS Sonoma 14.8.5 for versions 14.0-14.8.4, macOS Sequoia 15.7.5 for versions 15.0-15.7.4, or macOS Tahoe 26.4 for versions 26.0-26.3
- Back up your Mac using Time Machine or another backup solution before proceeding with the update
- Open System Settings and navigate to General > Software Update
- Click 'Check for Update' and allow macOS to find the available update
- Click 'Update Now' to download and install the appropriate security update (14.8.5, 15.7.5, or 26.4)
- Restart your Mac when prompted to complete the installation
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation1.0 h
- Implementation2.0 h
- Testing1.0 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 $1,424.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-20701 — 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-2026-20701 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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