What is CVE-2020-9857?

CVE-2020-9857 is a medium-severity vulnerability in Apple macOS. CVSS score: 4.3/10. Published 2020-10-27.

How severe is CVE-2020-9857?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Apple macOS

CVE-2020-9857

An issue existed in the parsing of URLs. This issue was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.5, Security Update 2020-003 Mojave, Security Update 2020-003 High Sierra. A malicious website may be able to exfiltrate autofilled data in Safari.

EPSS: 0.008 (51.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

Affected products

Apple Macos — versions unspecified
Apple Mac_os_x

References

product-security@apple.com (x_refsource_MISC, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2020-9857?: CVE-2020-9857 is a medium-severity vulnerability in Apple macOS. CVSS score: 4.3/10. Published 2020-10-27.
How severe is CVE-2020-9857?: Medium severity. CVSS v3 base score is 4.3 out of 10.