Auth bypass in Apple iOS
CVE-2021-30770
A logic issue was addressed with improved validation. This issue is fixed in iOS 14.7, tvOS 14.7, watchOS 7.6. An attacker that has already achieved kernel code execution may be able to bypass kernel memory mitigations.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (29.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Apple iOS — versions unspecified
- Apple Iphone OS
- Apple tvOS — versions unspecified
- Apple watchOS — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support.apple.com/en-us/HT212601 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/HT212605 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/HT212604 (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-30770?
- CVE-2021-30770 is a medium-severity vulnerability in Apple iOS, classified under Improper Authentication. CVSS score: 5.5/10. Published 2021-09-08.
- How severe is CVE-2021-30770?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2021-30770 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.