How severe is CVE-2016-3233?

CVE-2016-3233 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-3233 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-3233?

CVE-2016-3233 primarily affects Microsoft Excel. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-3233?

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-2016-3233 published?

CVE-2016-3233 was published on 2016-06-16 and last updated on 2026-06-17.

CVE-2016-3233

CVE-2016-3233 is a high-severity vulnerability in Microsoft Excel with a CVSS 3.x base score of 7.3. Its EPSS exploit-prediction score of 15% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 9.3
EPSS exploit prediction: 15% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Microsoft Excel
Published: 2016-06-16
Last modified: 2026-06-17

Description

Microsoft Excel 2007 SP3, Excel 2010 SP2, and Office Compatibility Pack SP3 allow remote attackers to execute arbitrary code via a crafted Office document, aka "Microsoft Office Memory Corruption Vulnerability."

Frequently asked questions

What is CVE-2016-3233?: Microsoft Excel 2007 SP3, Excel 2010 SP2, and Office Compatibility Pack SP3 allow remote attackers to execute arbitrary code via a crafted Office document, aka "Microsoft Office Memory Corruption Vulnerability."
How severe is CVE-2016-3233?: CVE-2016-3233 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-3233 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-3233?: CVE-2016-3233 primarily affects Microsoft Excel. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-3233?: 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-2016-3233 published?: CVE-2016-3233 was published on 2016-06-16 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:microsoft:excel:2007:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:excel:2010:sp2:*:*:*:*:x64:*
cpe:2.3:a:microsoft:excel:2010:sp2:*:*:*:*:x86:*
cpe:2.3:a:microsoft:office_compatibility_pack:*:sp3:*:*:*:*:*:*

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