CVE-2007-6321

Webmail vulnerability

CVSS

4.3

EPSS

5.4%

EPSS pct

92th

Exploited

No known

Cross-site scripting (XSS) vulnerability in RoundCube webmail 0.1rc2, 2007-12-09, and earlier versions, when using Internet Explorer, allows remote attackers to inject arbitrary web script or HTML via style sheets containing expression commands.

Affected vendor

Roundcube

Affected product

Webmail

CVSS vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Weakness type (CWE)

CWE-79 — Cross-Site Scripting (XSS)

Published

2007-12-12

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to partial impact to integrity.

Its EPSS score of 5.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2007-6321

Confirm whether Roundcube Webmail is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2007-6321.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2007-6321

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2007-6321 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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