Is CVE-2015-2558 in the CISA KEV catalog?

No. CVE-2015-2558 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-2558?

CVE-2015-2558 has a CVSS v2 base score of 9.3 (HIGH).

What is the EPSS score for CVE-2015-2558?

CVE-2015-2558 has an EPSS score of 23.01% (97th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2015-2558

HIGHEPSS 97th pctl

9.3

CVSS v2

NVD

Description

Use-after-free vulnerability in Microsoft Excel 2007 SP3, Excel 2010 SP2, Excel 2013 SP1, Excel 2013 RT SP1, Excel 2016, Excel for Mac 2011, Excel 2016 for Mac, Excel Viewer, Office Compatibility Pack SP3, and Excel Services on SharePoint Server 2007 SP3, 2010 SP2, and 2013 SP1 allows remote attackers to execute arbitrary code via a long fileVersion element in an Office document, aka "Microsoft Office Memory Corruption Vulnerability."

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

23.01%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% 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.