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VulnerabilityPublished Updated

CVE-2026-28893: Apple macOS · A document may be written to a temporary file when using print preview

Affects Apple macOSSource CVE Database V5

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Not known to be exploited · CVSS 3.3 Low : upgrade to 26.4 when convenient.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
3.3Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 26.4
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade Apple macOS to 26.4.

Affected software

ProductAffectedFixed in
ApplemacOSAffected
  • <26.4
Fixed in
  • 26.4

AI-suggested

To mitigate CVE-2026-28893, organizations should ensure all macOS systems are updated to macOS Tahoe 26.4 or later, where the issue is fixed. Administrators should enforce strict access controls on user directories and temporary file locations to prevent unauthorized access to temporary files. Implementing endpoint security solutions that monitor and restrict access to temporary files can further reduce risk. Users should be educated about the risks of leaving sensitive documents open and the importance of logging out or locking devices when unattended. For environments with shared devices, consider using separate user accounts with minimal privileges and enabling full disk encryption to protect data at rest. Regular audits of temporary file directories and cleanup policies can help identify and remove residual sensitive files. Additionally, organizations should monitor for any unusual local access patterns that could indicate attempts to exploit this vulnerability.

Description

A privacy issue was addressed with improved handling of temporary files. This issue is fixed in macOS Tahoe 26.4. A document may be written to a temporary file when using print preview.

References

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