ZeroDay Findings
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2011-0105

Microsoft Excel Improper Restriction of Operations within the Bounds of a Memory Buffer

Published Jul 19, 2023 · catalog updated Jul 19, 2023 · Microsoft Excel

Patch now

CVE-2011-0105 is in the CISA known-exploited catalog. Confirm Microsoft Excel against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
70.17%
Remediation
Remediation guidance
Affected products
vendor Microsoft Excel

Microsoft Excel 2002 SP3, Office 2004 and 2008 for Mac, and Open XML File Format Converter for Mac obtain a certain length value from an uninitialized memory location, which allows remote attackers to trigger a buffer overflow and execute arbitrary code via a crafted Excel file, aka "Excel Data Initialization Vulnerability."

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Microsoft Excelversion unspecified

How to fix CVE-2011-0105

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2011-0105 is in the CISA known-exploited catalog. Confirm Microsoft Excel against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 70.17%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 19, 2023 · VulnCheck KEV

    Detected

    Microsoft Excel 2002 SP3, Office 2004 and 2008 for Mac, and Open XML File Format Converter for Mac obtain a certain length value from an uninitialized memory location, which allows remote attackers to trigger a buffer overflow and execute arbitrary code via a crafted Excel file, aka "Excel Data Initialization Vulnerability."

  2. Jul 19, 2023 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2011-0105

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2011-0105

    30-day exploitation probability 70.2%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2011-0105

    Microsoft Excel 2002 SP3, Office 2004 and 2008 for Mac, and Open XML File Format Converter for Mac obtain a certain length value from an uninitialized memory location, which allows remote attackers to trigger a buffer overflow and execute arbitrary code via a crafted Excel file,

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.