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CVE-2018-0802: Microsoft Office Memory Corruption Vulnerability

criticalknown exploitedpublic exploitCVE-2018-0802
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Microsoft Office contains a memory corruption vulnerability due to the way objects are handled in memory. Successful exploitation allows for remote code execution in the context of the current user. This vulnerability is known to be chained with CVE-2018-0798.

CSIRTS triage

vendor: Microsoftproduct: OfficeMemory corruption
What
Microsoft Office contains a memory corruption vulnerability due to the way objects are handled in memory.
Who is affected
Users of Microsoft Office.
Urgency
Immediate action is required as the vulnerability is actively exploited and rated critical.
Action
Update Microsoft Office to the latest version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2018-0802

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2018-0802coverage & exploitation statusNVD · CVE.org

Recent advisories for Microsoft Office Memory

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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