Path Traversal in Apple iOS

CVE-2020-9920

A path handling issue was addressed with improved validation. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, watchOS 6.2.8. A malicious mail server may overwrite arbitrary mail files.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.019 (77.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-9920?
CVE-2020-9920 is a critical-severity vulnerability in Apple iOS, classified under Path Traversal. CVSS score: 9.1/10. Published 2020-10-22.
How severe is CVE-2020-9920?
Critical severity. CVSS v3 base score is 9.1 out of 10.