How severe is CVE-2014-6356?

CVE-2014-6356 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2014-6356 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-6356?

CVE-2014-6356 primarily affects Microsoft Office Compatibility Pack. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-6356?

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

When was CVE-2014-6356 published?

CVE-2014-6356 was published on 2014-12-11 and last updated on 2026-06-17.

CVE-2014-6356

CVE-2014-6356 is a critical-severity vulnerability in Microsoft Office Compatibility Pack with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 12% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Microsoft Office Compatibility Pack
Published: 2014-12-11
Last modified: 2026-06-17

Description

Array index error in Microsoft Word 2007 SP3, Word 2010 SP2, and Office Compatibility Pack SP3 allows remote attackers to execute arbitrary code via a crafted Office document, aka "Invalid Index Remote Code Execution Vulnerability."

Frequently asked questions

What is CVE-2014-6356?: Array index error in Microsoft Word 2007 SP3, Word 2010 SP2, and Office Compatibility Pack SP3 allows remote attackers to execute arbitrary code via a crafted Office document, aka "Invalid Index Remote Code Execution Vulnerability."
How severe is CVE-2014-6356?: CVE-2014-6356 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2014-6356 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-6356?: CVE-2014-6356 primarily affects Microsoft Office Compatibility Pack. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-6356?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2014-6356 published?: CVE-2014-6356 was published on 2014-12-11 and last updated on 2026-06-17.

References

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-081

Affected products (3)

cpe:2.3:a:microsoft:office_compatibility_pack:*:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:word:2007:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:word:2010:sp2:*:*:*:*:*:*

More vulnerabilities in Microsoft Office Compatibility Pack

CVE-2015-6177 — Critical (CVSS 9.3): Microsoft Excel 2007 SP3, Office Compatibility Pack SP3, and Excel Viewer allow remote attackers to execute arbitrary…
CVE-2015-6172 — Critical (CVSS 9.3): Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 SP1, Word 2016, Word 2013 RT SP1, and Office…
CVE-2015-6124 — Critical (CVSS 9.3): Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 SP1, Word 2013 RT SP1, and Office Compatibility Pack…
CVE-2015-6122 — Critical (CVSS 9.3): Microsoft Excel 2007 SP3, Excel 2010 SP2, Excel for Mac 2011, Office Compatibility Pack SP3, and Excel Viewer allow…
CVE-2015-6040 — Critical (CVSS 9.3): Microsoft Excel 2007 SP3, Excel 2010 SP2, Excel for Mac 2011, Excel 2016 for Mac, Office Compatibility Pack SP3, and…
CVE-2015-6092 — Critical (CVSS 9.3): Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 SP1, Word 2013 RT SP1, Word 2016, Office…

All CVEs affecting Microsoft Office Compatibility Pack →

Other CWE-94 (Code Injection) vulnerabilities

CVE-2026-57624 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in Blocksy Companion Pro <= 2.1.46 versions.
CVE-2026-10134 — Critical (CVSS 10.0): IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read…
CVE-2026-53576 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the authentication filter…
CVE-2026-10561 — Critical (CVSS 10.0): IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined…
CVE-2026-25470 — Critical (CVSS 10.0): Improper Control of Generation of Code ('Code Injection') vulnerability in ACPT ACPT (Pro) - Custom Post Types Plugin…
CVE-2026-48836 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in Easy Invoice <= 2.1.19 versions.

Browse all CWE-94 (Code Injection) vulnerabilities →