cbcvebase.
CVE-2021-30713
published 2021-09-08

CVE-2021-30713: A permissions issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.4. A malicious application may be able to bypass Privacy…

PriorityP181high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
KEVITW
CISA Known Exploited Vulnerabilitydue 2021-11-17
Exploited in the wild
EPSS
6.58%
93.1th percentile
A permissions issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.4. A malicious application may be able to bypass Privacy preferences. Apple is aware of a report that this issue may have been actively exploited..

Affected

6 ranges
VendorProductVersion rangeFixed in
applemac_os_x
applemac_os_x10.15 – 10.15.7
applemacos< 11.411.4
applemacos>= unspecified < 11.411.4
applemacos_big_sur
applesecurity_update_2021-005_catalina

Detection & IOCsextracted from sources · hover to see the quote

otherTrojan.Mac.XCSSET
  • Monitor macOS endpoint security events for TCC permission modifications using the ES_EVENT_TYPE_NOTIFY_TCC_MODIFY identifier (macOS 15.4+) to detect TCC bypass attempts related to this CVE.
  • ·The vulnerability is in the TCC component of macOS; the exact bypass mechanism is described as 'unspecified' by CISA, and Apple only states it is 'a permissions issue addressed with improved validation' — no further technical primitives are disclosed in these sources.

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.04.6MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P
vulncheck7.8HIGH
cisa7.8HIGH
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