How severe is CVE-2013-3858?

CVE-2013-3858 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2013-3858 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-3858?

CVE-2013-3858 primarily affects Microsoft Office Compatibility Pack. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-3858?

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-2013-3858 published?

CVE-2013-3858 was published on 2013-09-11 and last updated on 2026-06-16.

CVE-2013-3858

CVE-2013-3858 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 21% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 21% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Microsoft Office Compatibility Pack
Published: 2013-09-11
Last modified: 2026-06-16

Description

Microsoft Word Automation Services in SharePoint Server 2010 SP1, Word Web App 2010 SP1 in Office Web Apps 2010, Word 2003 SP3, Word 2007 SP3, Word 2010 SP1, Office Compatibility Pack SP3, and Word Viewer allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted Office document, aka "Word Memory Corruption Vulnerability," a different vulnerability than CVE-2013-3847, CVE-2013-3848, and CVE-2013-3849.

Frequently asked questions

What is CVE-2013-3858?: Microsoft Word Automation Services in SharePoint Server 2010 SP1, Word Web App 2010 SP1 in Office Web Apps 2010, Word 2003 SP3, Word 2007 SP3, Word 2010 SP1, Office Compatibility Pack SP3, and Word Viewer allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted Office document, aka "Word Memory Corruption Vulnerability," a different vulnerability than CVE-2013-3847, CVE-2013-3848, and CVE-2013-3849.
How severe is CVE-2013-3858?: CVE-2013-3858 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2013-3858 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3858?: CVE-2013-3858 primarily affects Microsoft Office Compatibility Pack. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-3858?: 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-2013-3858 published?: CVE-2013-3858 was published on 2013-09-11 and last updated on 2026-06-16.

References

Affected products (8)

cpe:2.3:a:microsoft:office_compatibility_pack:*:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:word:2003:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:word:2007:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:word:2010:sp1:*:*:*:*:x64:*
cpe:2.3:a:microsoft:word:2010:sp1:*:*:*:x86:*:*
cpe:2.3:a:microsoft:word_viewer:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office_web_apps:2010:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2010:sp1:*:*:*:*:*:*

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