CVE-2020-9855 json
A validation issue existed in the handling of symlinks.
published 2020-06-09 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-30634
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 19%
- public exploits
- 0
- none known
Summary
A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in macOS Catalina 10.15.5. A local attacker may be able to elevate their privileges.
Patch / fix
- Apple macOS macOS Catalina 10.15.5
Exploit prediction
0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Apple macOS
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
support.apple.com
/HT211170
vendor-advisory
Sources
- CVE List CVE-2020-9855
- NVD CVE-2020-9855
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