HIGHCVSS v4 8.4Vulnerability
CVE-2026-16477
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
Properties
- First seen
- 2026-10-22T14:47:26+00:00
- Cvss score
- 8.4
- Last seen
- 2026-10-22T19:00:31+00:00
- Euvd assigner
- CERT-PL
- Retrieved at
- 2026-10-23T02:20:30+00:00
- Src batch id
- euvd-20261023T003402Z-4d1819
- Source url
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-108208
- Score
- 8.4
- Euvd base score version
- 4.0
- Fetched at
- 2026-10-23T00:34:22+00:00
- Euvd vendor
- MTW
- Cvss vector
- CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- First seen by Signal
- 2026-10-22T18:12:34+00:00
- Euvd base score
- 8.4
- Vector
- CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Content hash
- 0bb67bd4908cab7c9369f47e9a721c10153c42c2761a86f504dd95d4358af752
- Published at
- 2026-10-22T15:17:05.817
- Euvd updated
- 2026-10-22T19:00:31+00:00
- Last modified
- 2026-10-22T19:17:50.770
- Euvd epss pct
- 0
Related Entities (1)
HAS_WEAKNESS (1)
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