Buffer overflow in Apple Iphone_os
CVE-2016-4656
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.
Vulnerability class: Buffer Overflow
EPSS: 0.236 (97.6th 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 Iphone_os
- N/a — versions n/a
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- product-security@apple.com (x_refsource_MISC, Broken Link)
- product-security@apple.com (Exploit, VDB Entry, Third Party Advisory, exploit, x_refsource_EXPLOIT-DB)
- product-security@apple.com (x_refsource_CONFIRM, Release Notes, Vendor Advisory)
- product-security@apple.com (vendor-advisory, x_refsource_APPLE, Mailing List, Broken Link, Vendor Advisory)
- product-security@apple.com (VDB Entry, Third Party Advisory, vdb-entry, Broken Link, x_refsource_BID)
- product-security@apple.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK, Broken Link)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2016-4656?
- CVE-2016-4656 is a high-severity vulnerability in Apple Iphone_os, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2016-08-25.
- How severe is CVE-2016-4656?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2016-4656 known to be exploited?
- Yes. CVE-2016-4656 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-05-24), indicating it is being actively exploited. 28 public proof-of-concept repositories are indexed.