How severe is CVE-2011-0101?

CVE-2011-0101 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2011-0101 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 30% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0101?

CVE-2011-0101 affects Microsoft Excel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-0101?

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-2011-0101 published?

CVE-2011-0101 was published on 2011-04-13 and last updated on 2026-06-16.

CVE-2011-0101

CVE-2011-0101 is a critical-severity vulnerability in Microsoft Excel with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 30% places it in the 98th 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: 30% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Microsoft Excel
Published: 2011-04-13
Last modified: 2026-06-16

Description

Microsoft Excel 2002 SP3 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted RealTimeData record, related to a stTopic field, double-byte characters, and an incorrect pointer calculation, aka "Excel Record Parsing WriteAV Vulnerability."

Frequently asked questions

What is CVE-2011-0101?: Microsoft Excel 2002 SP3 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted RealTimeData record, related to a stTopic field, double-byte characters, and an incorrect pointer calculation, aka "Excel Record Parsing WriteAV Vulnerability."
How severe is CVE-2011-0101?: CVE-2011-0101 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2011-0101 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 30% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0101?: CVE-2011-0101 affects Microsoft Excel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-0101?: 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-2011-0101 published?: CVE-2011-0101 was published on 2011-04-13 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:excel:2002:sp3:*:*:*:*:*:*

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