Buffer overflow in Apple macOS
CVE-2020-27897
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1. An application may be able to execute arbitrary code with kernel privileges.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.006 (45.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · 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/HT211931 (Vendor Advisory)
- support.apple.com/en-us/HT212011 (Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-21-486/ (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27897?
- CVE-2020-27897 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2021-04-02.
- How severe is CVE-2020-27897?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-27897 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.