What is CVE-2007-4040?

CVE-2007-4040 is a high-severity vulnerability in Microsoft Outlook, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2007-07-27.

How severe is CVE-2007-4040?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2007-4040 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Microsoft Outlook

CVE-2007-4040

Argument injection vulnerability involving Microsoft Outlook and Outlook Express, when certain URIs are registered, allows remote attackers to conduct cross-browser scripting attacks and execute arbitrary commands via shell metacharacters…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.135 (96.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

cve@mitre.org (x_refsource_MISC)
cve@mitre.org (mailing-list, x_refsource_FULLDISC)

Frequently asked questions

What is CVE-2007-4040?: CVE-2007-4040 is a high-severity vulnerability in Microsoft Outlook, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2007-07-27.
How severe is CVE-2007-4040?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2007-4040 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.