CVE-2021-30721

Mac Os X vulnerability

CVSS

6.5

EPSS

24.3%

EPSS pct

98th

Exploited

No known

A path handling issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 Catalina, Security Update 2021-004 Mojave. An attacker in a privileged network position may be able to leak sensitive user information.

Affected vendor

Apple

Affected product

Mac Os X

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Published

2021-09-08

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality.

Its EPSS score of 24.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2021-30721

Confirm whether Apple Mac Os X is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-30721.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-30721

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-30721 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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