Buffer overflow in Apple macOS
CVE-2021-30981
A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.1, Security Update 2021-008 Catalina, macOS Big Sur 11.6.2. An application may be able to execute arbitrary code with kernel privileges.
Vulnerability class: Buffer Overflow
EPSS: 0.018 (75.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apple Macos — versions unspecified
- Apple Mac_os_x — versions 10.15.7
Weakness classification (CWE)
Public proof-of-concept exploits
References
- product-security@apple.com (x_refsource_MISC)
- product-security@apple.com (x_refsource_MISC)
- product-security@apple.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-30981?
- CVE-2021-30981 is a high-severity vulnerability in Apple macOS, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2021-08-24.
- How severe is CVE-2021-30981?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-30981 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.