Excel Viewer vulnerabilitiesAnd the versions its exploited flaws hit.
Excel Viewer is made by Microsoft. We track 125 published vulnerabilities in it, across 2 versions. 7 of them are on the list of flaws known to be exploited, the newest added on 14 April 2026. If you run Excel Viewer, check your version against the exploited flaws below and patch those first.
The most recent Excel Viewer flaw added to the known-exploited list is CVE-2009-0238, on 14 April 2026. We keep watching the known-exploited list.
Which versions of Excel Viewer do the exploited flaws hit?
Each exploited flaw lists the versions it affects, as published by the vendor. Find your version, then patch.
- CVE-2009-0238Exploited list, 14 Apr 2026
Microsoft Office Remote Code Execution
all versions - CVE-2007-0671Exploited list, 12 Aug 2025
Microsoft Office Excel Remote Code Execution Vulnerability
2003 - CVE-2009-3129Exploited list, 3 Mar 2022
Microsoft Excel Featheader Record Memory Corruption Vulnerability
2003-sp3 - CVE-2015-2424Exploited list, 3 Mar 2022
Microsoft PowerPoint Memory Corruption Vulnerability
2007-sp3 - CVE-2019-0541Exploited list, 3 Nov 2021
Microsoft MSHTML Remote Code Execution Vulnerability
2007-sp3
2 more exploited flaws name Excel Viewer without a version of its own, for example as the system other affected software runs on. They are in the list below.
Which Excel Viewer vulnerabilities are being exploited?
7 flaws are on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 8.8Microsoft Office Remote Code Execution
Microsoft Office Excel contains a remote code execution vulnerability that could allow an attacker to take complete control of an affected system if a user opens a specially crafted Excel file that includes a...
- 8.8Microsoft Office Excel Remote Code Execution Vulnerability
Microsoft Office Excel contains a remote code execution vulnerability that can be exploited when a specially crafted Excel file is opened.
- 7.8Microsoft Office Security Feature Bypass Vulnerability
A security feature bypass vulnerability exists when Microsoft Office improperly handles input.
- 7.8Microsoft Excel Featheader Record Memory Corruption Vulnerability
Microsoft Office Excel allows remote attackers to execute arbitrary code via a spreadsheet with a FEATHEADER record containing an invalid cbHdrData size element that affects a pointer offset.
- 8.8Microsoft PowerPoint Memory Corruption Vulnerability
Microsoft PowerPoint allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted Office document.
- 7.8Microsoft Graphics Component Memory Corruption Vulnerability
Microsoft Graphics Component contains a memory corruption vulnerability which can allow for remote code execution.
- 8.8Microsoft MSHTML Remote Code Execution Vulnerability
Microsoft MSHTML engine contains an improper input validation vulnerability that allows for remote code execution vulnerability.
Which Excel Viewer flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- 58%CVE-2008-0081Critical
Unspecified vulnerability in Microsoft Excel 2000 SP3 through 2003 SP2, Viewer 2003, and Office 2004 for Mac allows user-assisted remote attackers to execute arbitrary code via crafted macros, aka "Macro Validation...
- 58%
Microsoft Excel 2007 SP3, Excel 2010 SP2, Excel 2013 SP1, Excel 2013 RT SP1, Excel 2016, Office Compatibility Pack SP3, and Excel Viewer allow user-assisted remote attackers to execute arbitrary commands via a...
- 53%
A remote code execution vulnerability exists in the way that the MSHTML engine inproperly validates input, aka "MSHTML Engine Remote Code Execution Vulnerability." This affects Microsoft Office, Microsoft Office Word...
- 51%CVE-2008-0111Critical
Unspecified vulnerability in Microsoft Excel 2000 SP3 through 2007, Viewer 2003, Compatibility Pack, and Office 2004 for Mac allows user-assisted remote attackers to execute arbitrary code via crafted data validation...
- 43%
Unspecified vulnerability in Microsoft Excel 2000, XP, 2003, and 2004 for Mac, and possibly other Office products, allows remote user-assisted attackers to execute arbitrary code via unknown attack vectors, as...
- 43%
Microsoft Office Excel 2000 SP3, 2002 SP3, 2003 SP3, and 2007 SP1; Excel Viewer 2003 Gold and SP3; Excel Viewer; Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1; and Excel in Microsoft Office...
Running Excel Viewer? We'll keep checking.
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1 flaw being exploited affects software Acme tracks
Microsoft Office Excel contains a remote code execution vulnerability that could allow an attacker to take complete control of an affected system if a user opens a specially crafted Excel file that includes a malformed object.
- Matched to
- Excel Viewer on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 125 published vulnerabilities listed under the name Excel Viewer, across 2 versions. The most recent Excel Viewer flaw added to the known-exploited list is CVE-2009-0238, on 14 April 2026.
7 are on the list of flaws known to be exploited. The most recently added are CVE-2009-0238, CVE-2007-0671 and CVE-2016-7262.
Each flaw names its own versions, usually as ranges. The newest, CVE-2009-0238, affects all versions. The versions for every exploited flaw are listed on this page.
Create a Precursor Intelligence account and track Excel Viewer. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.