Out-of-bounds Read in Apple iOS And Ipados
CVE-2021-1758
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution.
Vulnerability class: Buffer Overflow
EPSS: 0.026 (83.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Apple Ios And Ipados — versions unspecified
- Apple Ipados
- Apple Iphone_os
- Apple Macos — versions unspecified
- Apple Mac_os_x — versions 10.14.6, 10.15.7
- Apple Tvos
- Apple Watchos
Weakness classification (CWE)
Public proof-of-concept exploits
References
- product-security@apple.com (x_refsource_MISC, Release Notes, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Release Notes, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Release Notes, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-1758?
- CVE-2021-1758 is a high-severity vulnerability in Apple iOS And Ipados, classified under Out-of-bounds Read. CVSS score: 7.8/10. Published 2021-04-02.
- How severe is CVE-2021-1758?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-1758 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.