Is CVE-2015-6123 in the CISA KEV catalog?

No. CVE-2015-6123 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-6123?

CVE-2015-6123 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2015-6123?

CVE-2015-6123 has an EPSS score of 11.15% (95th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2015-6123

MEDIUMEPSS 95th pctl

4.3

CVSS v2

NVD

Description

Cross-site scripting (XSS) vulnerability in Microsoft Excel for Mac 2011 and Excel 2016 for Mac allows remote attackers to inject arbitrary web script or HTML via a crafted e-mail message that is mishandled by Outlook for Mac, aka "Microsoft Outlook for Mac Spoofing Vulnerability."

CWE-79Cross-Site Scripting (XSS)

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

11.15%probability of exploitation in 30 days

95thpercentile

Very high risk: more likely to be exploited than 95% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.