CVE-2007-2495: Multiple stack-based buffer overflows in the ExcelOCX ActiveX control in ExcelViewer.ocx 3.1.0.6 allow remote

Q: How do I fix CVE-2007-2495?

excel viewer ocx: upgrade to newer than 3.1.0.6. Exact commands for each OS are on this page.

Q: Is CVE-2007-2495 being exploited?

CVE-2007-2495 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2007-2495 affect?

CVE-2007-2495 affects excel viewer ocx. Severity is high (CVSS 7.5). Multiple stack-based buffer overflows in the ExcelOCX ActiveX control in ExcelViewer.ocx 3.1.0.6 allow remote attackers to cause a denial of service (Internet Explorer 7 crash) via a long (1) DoOleCommand, (2) FTPDownloadFile, (3) FTPUpload

Q: How urgent is CVE-2007-2495?

Priority 54/100. High severity; EPSS top 10%: very likely to be exploited; Public exploit reference

This month

HIGH 7.5UPGRADE

CVE-2007-2495 is a high-severity flaw (CVSS 7.5) affecting excel viewer ocx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple stack-based buffer overflows in the ExcelOCX ActiveX control in ExcelViewer.ocx 3.1.0.6 allow remote attackers to cause a denial of service (Internet Explorer 7 crash) via a long (1) DoOleCommand, (2) FTPDownloadFile, (3) FTPUploadFile, (4) HttpUploadFile, (5) Save, (6) SaveWebFile, (7) HttpDownloadFile, (8) Open, or (9) OpenWebFile property value. NOTE: some of these details are obtained from third party information.

Why this priority

High severity
EPSS top 10%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	4.0% (top 10%)
CISA exploited list	No
Published	2007-05-04
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: office ocx

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2007-05-04 00:19 UTCPublished CVE record published
2026-06-16 22:39 UTCUpdated Record last modified

office ocx excel viewer ocx UPGRADE

Affected: <= 3.1.0.6

Fixed in: newer than 3.1.0.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy excel-viewer-ocx || rpm -q excel-viewer-ocx || excel-viewer-ocx --version

2. UPGRADE to newer than 3.1.0.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade excel-viewer-ocx

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade excel-viewer-ocx

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Excel Viewer OCX 3.1.0.6 - Multiple Denial of Service Vulnerabilities

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2007-2495?

excel viewer ocx: upgrade to newer than 3.1.0.6. Exact commands for each OS are on this page.

Is CVE-2007-2495 being exploited?

CVE-2007-2495 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2007-2495 affect?

CVE-2007-2495 affects excel viewer ocx. Severity is high (CVSS 7.5). Multiple stack-based buffer overflows in the ExcelOCX ActiveX control in ExcelViewer.ocx 3.1.0.6 allow remote attackers to cause a denial of service (Internet Explorer 7 crash) via a long (1) DoOleCommand, (2) FTPDownloadFile, (3) FTPUpload

How urgent is CVE-2007-2495?

Priority 54/100. High severity; EPSS top 10%: very likely to be exploited; Public exploit reference

Software pages

Internet Explorer vulnerabilities

References

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