Buffer overflow in Apple iOS
CVE-2021-30759
A stack overflow was addressed with improved input validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7, Security Update 2021-005 Mojave, Security Update 2021-004 Catalina. Processing a maliciously crafted font file may lead to arbitrary code execution.
Vulnerability class: Buffer Overflow
EPSS: 0.015 (72.0th 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 — versions unspecified
- Apple Ipados
- Apple Iphone_os
- Apple Macos — versions unspecified
- Apple Mac_os_x — versions 10.14, 10.14.0, 10.14.1
- Apple Security Update - Catalina — versions unspecified
- Apple Tvos
- Apple Watchos
Weakness classification (CWE)
References
- product-security@apple.com (x_refsource_MISC, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Vendor Advisory)
- product-security@apple.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-30759?
- CVE-2021-30759 is a high-severity vulnerability in Apple iOS, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2021-09-08.
- How severe is CVE-2021-30759?
- High severity. CVSS v3 base score is 7.8 out of 10.