CVE-2016-4656 is a vulnerability in Apple iOS
Published on August 25, 2016
The kernel in Apple iOS before 9.3.5 allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.
Known Exploited Vulnerability
This Apple iOS Memory Corruption Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. A memory corruption vulnerability in Apple iOS kernel allows attackers to execute code in a privileged context or cause a denial-of-service via a crafted application.
The following remediation steps are recommended / required by June 14, 2022: Apply updates per vendor instructions.
Vulnerability Analysis
CVE-2016-4656 is exploitable with local system access, requires user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2016-4656 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2016-4656
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Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.