Is CVE-2018-0798 actively exploited?

Yes. CVE-2018-0798 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2018-0798 be exploited remotely?

The attack vector of CVE-2018-0798 has not been classified yet.

What is the CVSS score of CVE-2018-0798?

CVE-2018-0798 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2018-0798

HIGHCISA KEVIN THE WILD

CVE-2018-0798

Published: November 3, 2021

EPSS:94.06%probability of exploitation in 30 daysPercentile:99.9th

Official Description

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-2018-0802.

NVD Source

CISA KEV Advisory

Microsoft Office Memory Corruption Vulnerability

Added to KEV: 2021-11-03Federal patch deadline: 2022-05-03

Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

Microsoft Office contains a memory corruption vulnerability that can lead to remote code execution when handling objects in memory. This flaw allows an attacker to execute code in the context of the current user. The high EPSS score of 0.94056 indicates a very high likelihood of exploitation.

This vulnerability has been actively exploited in the wild and is listed in CISA's KEV catalog, confirming its use by threat actors. It is remotely exploitable.

Recommended Action

Ensure all Microsoft Office installations are updated with the latest security patches to mitigate this memory corruption vulnerability.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2018-0798 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2018-0798 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.