PatchSiren cyber security CVE debrief
CVE-2016-7617 Apple CVE debrief
CVE-2016-7617 is a high-severity Apple macOS Bluetooth issue disclosed on 2017-02-20. According to the NVD record, macOS before 10.12.2 is affected, with the vulnerable range mapped through 10.12.1. The flaw is described as a type confusion issue in the Bluetooth component that can let a crafted app trigger arbitrary code execution in a privileged context or cause a denial of service. From a defender’s perspective, this is important because the impact includes high confidentiality, integrity, and availability loss, and the CVSS vector indicates local access with user interaction.
- Vendor
- Apple
- Product
- CVE-2016-7617
- CVSS
- HIGH 7.8
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2017-02-20
- Original CVE updated
- 2026-05-13
- Advisory published
- 2017-02-20
- Advisory updated
- 2026-05-13
Who should care
macOS administrators, endpoint security teams, and users or fleet operators still running affected macOS releases before 10.12.2 should care most. Any environment that permits untrusted apps or has delayed OS patching should prioritize review and remediation.
Technical summary
NVD describes the vulnerability as a Bluetooth component type confusion in Apple macOS before 10.12.2. The CVSS 3.0 vector is AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating a local attack that requires user interaction but no privileges. The weakness is categorized as CWE-704 (Incorrect Type Conversion or Cast). The reported impact is arbitrary code execution in a privileged context or denial of service, consistent with a memory-safety or type-handling failure in a system component.
Defensive priority
High. The issue affects a system component, can lead to privileged code execution, and is scored 7.8 HIGH by NVD. Patch priority should be elevated for any unmanaged or legacy Macs that may still be on releases earlier than 10.12.2.
Recommended defensive actions
- Confirm whether any Macs are running macOS earlier than 10.12.2 and schedule immediate upgrade or vendor-supported remediation.
- Validate that Apple’s security update referenced by support.apple.com/HT207423 has been applied across the fleet.
- Prioritize endpoint compliance checks for systems that allow user-installed apps or frequently process untrusted local content.
- Monitor for unexpected crashes or instability in Bluetooth-related components on unpatched systems as a defensive signal, without assuming exploitation.
- Retire or isolate unsupported macOS versions that cannot receive the relevant security update.
Evidence notes
The supplied NVD record states: publishedAt 2017-02-20T08:59:02.697Z, modifiedAt 2026-05-13T00:24:29.033Z, affected macOS versions before 10.12.2, CVSS 3.0 vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, and CWE-704. The record also cites Apple’s advisory at https://support.apple.com/HT207423 and lists public references from Apple to SecurityFocus, SecurityTracker, and Exploit-DB. This debrief uses only the supplied corpus and does not rely on external validation beyond the provided official links.
Official resources
Publicly disclosed on 2017-02-20, based on the supplied CVE publication timestamp. The source record was later modified on 2026-05-13, which should not be treated as the disclosure date.