Buffer overflow in Apple macOS
CVE-2021-30717
A memory corruption issue was addressed with improved state management. 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 execute arbitrary code.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.020 (80.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Apple macOS — versions unspecified
- Apple Mac OS X — versions 10.14.6, 10.15.7
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support.apple.com/en-us/HT212529 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/HT212530 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/HT212531 (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-30717?
- CVE-2021-30717 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Write. CVSS score: 8.1/10. Published 2021-09-08.
- How severe is CVE-2021-30717?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2021-30717 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.