Is CVE-2011-4540 being actively exploited?

CVE-2011-4540 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-4540?

CVE-2011-4540 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2011-4540

MEDIUM · CVSS 4.3EPSS 1.7%EU EUVD

Multiple cross-site scripting (XSS) vulnerabilities in AtMail Open (aka AtMail Open-Source edition) 1.04 allow remote attackers to inject arbitrary web script or HTML via the func parameter to (1) ldap.php or (2) search.php.

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness (CWE): CWE-79
EPSS score: 1.7% (78th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-4466)
Published: December 1, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-4466 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

atmail / atmail open

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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