SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2012-2539

Microsoft Word Remote Code Execution Vulnerability

KEVHIGH 7.8EPSS 53.2%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 18 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Microsoft Word 2003 SP3, 2007 SP2 and SP3, and 2010 SP1; Word Viewer; Office Compatibility Pack SP2 and SP3; and Office Web Apps 2010 SP1 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted RTF data, aka "Word RTF 'listoverridecount' Remote Code Execution Vulnerability."

CVSS 3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
53.16% probability · 99th percentile
CISA KEV
Listed 28 March 2022 · due 18 April 2022
Weakness
CWE-787
Affected
microsoft/office compatibility pack · microsoft/office web apps · microsoft/office word viewer · microsoft/sharepoint server · microsoft/word
Source
secure@microsoft.com

CISA notes

Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2012-2539

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.