How severe is CVE-2014-1256?

CVE-2014-1256 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2014-1256 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-1256?

CVE-2014-1256 primarily affects Apple Mac Os X. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-1256?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2014-1256 published?

CVE-2014-1256 was published on 2014-02-27 and last updated on 2026-06-17.

CVE-2014-1256

CVE-2014-1256 is a high-severity vulnerability in Apple Mac Os X with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Apple Mac Os X
Published: 2014-02-27
Last modified: 2026-06-17

Description

Buffer overflow in Apple Type Services (ATS) in Apple OS X before 10.9.2 allows attackers to bypass the App Sandbox protection mechanism via crafted Mach messages.

Frequently asked questions

What is CVE-2014-1256?: Buffer overflow in Apple Type Services (ATS) in Apple OS X before 10.9.2 allows attackers to bypass the App Sandbox protection mechanism via crafted Mach messages.
How severe is CVE-2014-1256?: CVE-2014-1256 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2014-1256 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-1256?: CVE-2014-1256 primarily affects Apple Mac Os X. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-1256?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2014-1256 published?: CVE-2014-1256 was published on 2014-02-27 and last updated on 2026-06-17.

References

http://support.apple.com/kb/HT6150

Affected products (21)

cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.7.0:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.7.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.7.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.7.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.7.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.7.5:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.8.0:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.8.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.8.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.8.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.8.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.8.5:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.8.5:supplemental_update:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.9:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.7.0:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.7.1:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.7.2:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.7.3:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.7.4:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x_server:10.7.5:*:*:*:*:*:*:*

More vulnerabilities in Apple Mac Os X

CVE-2018-4310 — Critical (CVSS 10.0): An access issue was addressed with additional sandbox restrictions. This issue affected versions prior to iOS 12, macOS…
CVE-2019-6235 — Critical (CVSS 10.0): A memory corruption issue was addressed with improved validation. This issue is fixed in iOS 12.1.3, macOS Mojave…
CVE-2018-4229 — Critical (CVSS 10.0): An issue was discovered in certain Apple products. macOS before 10.13.5 is affected. The issue involves the "Grand…
CVE-2018-4091 — Critical (CVSS 10.0): An issue was discovered in certain Apple products. macOS before 10.13.3 is affected. The issue involves the "Sandbox"…
CVE-2015-8659 — Critical (CVSS 10.0): The idle stream handling in nghttp2 before 1.6.0 allows attackers to have unspecified impact via unknown vectors, aka a…
CVE-2015-7071 — Critical (CVSS 10.0): The File Bookmark component in Apple OS X before 10.11.2 allows attackers to bypass a sandbox protection mechanism for…

All CVEs affecting Apple Mac Os X →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →