How severe is CVE-2015-2423?

CVE-2015-2423 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2015-2423 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-2423?

CVE-2015-2423 primarily affects Microsoft Excel. In total, 36 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-2423?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-2423 published?

CVE-2015-2423 was published on 2015-08-15 and last updated on 2026-06-17.

CVE-2015-2423

CVE-2015-2423 is a medium-severity vulnerability in Microsoft Excel with a CVSS 2.0 base score of 4.3. Its EPSS exploit-prediction score of 20% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 20% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Microsoft Excel
Published: 2015-08-15
Last modified: 2026-06-17

Description

Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, Windows 10, Excel 2007 SP3, PowerPoint 2007 SP3, Visio 2007 SP3, Word 2007 SP3, Office 2010 SP2, Excel 2010 SP2, PowerPoint 2010 SP2, Visio 2010 SP2, Word 2010 SP2, Excel 2013 SP1, PowerPoint 2013 SP1, Visio 2013 SP1, Word 2013 SP1, Excel 2013 RT SP1, PowerPoint 2013 RT SP1, Visio 2013 RT SP1, Word 2013 RT SP1, and Internet Explorer 7 through 11 allow remote attackers to gain privileges and obtain sensitive information via a crafted command-line parameter to an Office application or Notepad, as demonstrated by a transition from Low Integrity to Medium Integrity, aka "Unsafe Command Line Parameter Passing Vulnerability."

Frequently asked questions

What is CVE-2015-2423?: Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, Windows 10, Excel 2007 SP3, PowerPoint 2007 SP3, Visio 2007 SP3, Word 2007 SP3, Office 2010 SP2, Excel 2010 SP2, PowerPoint 2010 SP2, Visio 2010 SP2, Word 2010 SP2, Excel 2013 SP1, PowerPoint 2013 SP1, Visio 2013 SP1, Word 2013 SP1, Excel 2013 RT SP1, PowerPoint 2013 RT SP1, Visio 2013 RT SP1, Word 2013 RT SP1, and Internet Explorer 7 through 11 allow remote attackers to gain privileges and obtain sensitive information via a crafted command-line parameter to an Office application or Notepad, as demonstrated by a transition from Low Integrity to Medium Integrity, aka "Unsafe Command Line Parameter Passing Vulnerability."
How severe is CVE-2015-2423?: CVE-2015-2423 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2015-2423 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-2423?: CVE-2015-2423 primarily affects Microsoft Excel. In total, 36 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-2423?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-2423 published?: CVE-2015-2423 was published on 2015-08-15 and last updated on 2026-06-17.

References

Affected products (36)

cpe:2.3:a:microsoft:excel:2007:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:excel:2010:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:excel:2013:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:excel:2013:sp1:*:*:rt:*:*:*
cpe:2.3:a:microsoft:office:2010:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:powerpoint:2007:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:powerpoint:2010:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:powerpoint:2013:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:powerpoint:2013:sp1:*:*:rt:*:*:*
cpe:2.3:a:microsoft:visio:2007:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:visio:2010:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:visio:2013:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:visio:2013:sp1:*:*:rt:*:*:*
cpe:2.3:a:microsoft:visio:2016:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:word:2007:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:word:2010:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:word:2013:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:word:2013:sp1:*:*:rt:*:*:*
cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:7:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:8:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:10:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:11:-:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_8:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_rt:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:*
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:*:*

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