BaselineWatch
Desk

CVE-2026-16477

8.4 high SSVC exploitation: none Published

CleanShot X for macOS insecurely deserializes untrusted data embedded in a .cleanshot project file (editable screenshot annotations). Exploitation requires an attacker to craft a malicious .cleanshot file, deliver it to the target, and have the target open it; the payload then executes automatically during parsing, resulting in arbitrary code execution in the context of the current user. Users who have never opened a .cleanshot file from an untrusted source are not affected by this vulnerability. This vulnerability was fixed in versions: 4.5.2, 4.6.3, 4.7.8 and 4.8.10

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 6

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-22 14:47
  2. StatusPublished → Awaiting AnalysisNVD modified 2026-10-22 19:17
  3. StatusAwaiting Analysis → PublishedNVD modified 2026-10-22 14:47
  4. StatusPublished → Awaiting AnalysisNVD modified 2026-10-22 17:21
  5. StatusReceived → PublishedNVD modified 2026-10-22 14:47
  6. First seenCVSS 8.4NVD modified 2026-10-22 15:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 2