Apple Watch OS 1.0 FontParser memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in Apple Watch OS 1.0 (Smartwatch Operating System) and classified as critical. Affected by this issue is some unknown processing of the component FontParser. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 05/19/2015 by Marc Schoenefeld as HT204870 as confirmed advisory (Website). The advisory is shared for download at This vulnerability is handled as CVE-2015-1093 since 01/16/2015. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 82699 (Mac OS X 10.10.x < 10.10.3 Multiple Vulnerabilities (FREAK)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks.

Upgrading to version 1.0.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (82699). is providing further details. The entries 69184, 74699, 74709 and 74710 are pretty similar.







  • commercial

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
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Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍


Nessus ID: 82699
Nessus Name: Mac OS X 10.10.x < 10.10.3 Multiple Vulnerabilities (FREAK)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-01 Apr15
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: Watch OS 1.0.1


01/16/2015 🔍
04/08/2015 +82 days 🔍
04/08/2015 +0 days 🔍
04/10/2015 +2 days 🔍
05/19/2015 +39 days 🔍
05/19/2015 +0 days 🔍
05/20/2015 +1 days 🔍
09/08/2015 +111 days 🔍
05/18/2022 +2444 days 🔍



Advisory: HT204870
Researcher: Marc Schoenefeld
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-1093 (🔍)
SecurityTracker: 1032048
Vulnerability Center: 52475 - Apple MacOS X Remote Code Execution via a Crafted Font File - CVE-2015-1093, Medium
SecurityFocus: 73984 - Apple Mac OS X Prior to 10.10.3 and iOS Prior to 8.3 Multiple Security Vulnerabilities

Misc.: 🔍
See also: 🔍


Created: 05/20/2015 10:45 AM
Updated: 05/18/2022 02:21 AM
Changes: 05/20/2015 10:45 AM (63), 10/08/2018 03:09 PM (14), 05/18/2022 02:14 AM (2), 05/18/2022 02:21 AM (1)
Complete: 🔍


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