Actively exploited · Published Dec 12, 2012 · Assigned by microsoft

CVE-2012-2539

High 7.8 Exploited

In plain English

A high-severity out-of-bounds write in Word from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on March 28, 2022). The chance it is exploited in the next 30 days is estimated at 53.0% (higher than 99% of all known vulnerabilities). Apply updates per vendor instructions.

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)53.0%top 1.0% of all CVEs

Exploited in the wildYesCISA KEV since Mar 28, 2022

Attack toolingNoneno public tooling known

CISA guidance

Apply updates per vendor instructions.

Federal agencies must remediate by Apr 18, 2022.

Official 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."

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

TA12-346A third-party-advisory, x_refsource_CERT
MS12-079 vendor-advisory, x_refsource_MS
oval:org.mitre.oval:def:16073 vdb-entry, signature, x_refsource_OVAL
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-2539 government-resource