CVE-2007-2588: Multiple buffer overflows in the Office Viewer OCX ActiveX control (oa.ocx) 3.2 allow remote attackers to caus

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HIGH 9.3DOWNGRADE

CVE-2007-2588 is a high-severity flaw (CVSS 9.3) affecting office viewer ocx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple buffer overflows in the Office Viewer OCX ActiveX control (oa.ocx) 3.2 allow remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long argument to the (1) HttpDownloadFile, (2) Open, (3) OpenWebFile, (4) DoOleCommand, (5) FTPDownloadFile, (6) FTPUploadFile, (7) HttpUploadFile, (8) Save, or (9) SaveWebFile function.

Why this priority

Critical severity
EPSS top 6%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.3 (High)
EPSS exploit chance	7.0% (top 6%)
CISA exploited list	No
Published	2007-05-10
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

2007-05-10 00:19 UTCPublished CVE record published
2026-06-16 22:39 UTCUpdated Record last modified

office ocx office viewer ocx DOWNGRADE

Affected: 3.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.2 (Debian / Ubuntu)

apt-cache madison office-viewer-ocx sudo apt install office-viewer-ocx=<VERSION_BEFORE_3.2> sudo apt-mark hold office-viewer-ocx

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list office-viewer-ocx sudo dnf downgrade office-viewer-ocx-<VERSION_BEFORE_3.2> sudo dnf versionlock add office-viewer-ocx

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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: Office Viewer OCX 3.2.0.5 - 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-2007-2588?

office viewer ocx: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2007-2588 being exploited?

CVE-2007-2588 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-2007-2588 affect?

CVE-2007-2588 affects office viewer ocx. Severity is high (CVSS 9.3). Multiple buffer overflows in the Office Viewer OCX ActiveX control (oa.ocx) 3.2 allow remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long argument to the (1) HttpDownloadFile, (2) Open, (3) Op

How urgent is CVE-2007-2588?

Priority 61/100. Critical severity; EPSS top 6%: very likely to be exploited; Public exploit reference

References

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