SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2015-2555

Use-after-free vulnerability in Microsoft Excel 2010 SP2, Excel 2013 SP1, Excel 2013 RT SP1, Excel 2016, Excel for Mac 2011, Excel 2016 for Mac, and Excel Services on SharePoint Server 2010 SP2 and 2013 SP1 allows remote attackers to execute arbitrary…

HIGH 9.3EPSS 23.0%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 23.0%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

Use-after-free vulnerability in Microsoft Excel 2010 SP2, Excel 2013 SP1, Excel 2013 RT SP1, Excel 2016, Excel for Mac 2011, Excel 2016 for Mac, and Excel Services on SharePoint Server 2010 SP2 and 2013 SP1 allows remote attackers to execute arbitrary code via a crafted calculatedColumnFormula object in an Office document, aka "Microsoft Office Memory Corruption Vulnerability."

CVSS 2.0
9.3 HIGHAV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS
23.01% probability · 98th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
microsoft/excel · microsoft/excel for mac · microsoft/sharepoint server
Source
secure@microsoft.com
EPSS trend
0%13%25%12 October 2026: 23.01%4 November 2026: 23.01%12 October 20264 November 2026

EPSS moved from 23.0% on 12 October 2026 to 23.0% on 4 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.