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cve recordhighexploited in the wildzero day3 of 3 cataloguesransomwareexploit reported

CVE-2018-0802

Microsoft · Office · Microsoft Office Memory Corruption Vulnerability

· Added to CISA KEV
CVSS—
Severityhigh
Weakness—
EPSS93.3%99.8th percentile
Exploited3 KEV sources
Ransomware useKnown
Federal fix dueMay 3, 2022
patch window

Called exploited 1 days before disclosure.

Measured from the CVE publication date to the earliest of 3 KEV catalogues that list it.

The life of this vulnerability

  1. CVE published
  2. First KEV listing1d
  3. Last KEV listing3.8y
  4. Last sighting4.8y

Gaps are compressed to equal steps. The elapsed time is printed under each.

Which catalogues call it exploited

Sources3 of 3
Listings differ by1394 d
Strongest claimconfirmed

3 catalogues list it. CIRCL aggregates the others and is shown but not counted.

Public exploitation evidence

57 public reports collected from VulnCheck and CIRCL, first on Jan 9, 2018. Each links to its original source. We have not verified them.

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-2018-0798.

Required action (CISA)

Apply updates per vendor instructions.

References

← Back to the CVE Tracker

Our coverage of CVE-2018-0802

CVE-2008-4128high

July 2026 CVE Landscape

Cybersecurity researchers identified 85 high-impact vulnerabilities in July 2026 that require urgent remediation, marking a 44% increase from the previous month. Of these, 36 were assigned a "Very Critical" risk score by Insikt Group. The vulnerabilities affected products from 61 vendors, with Microsoft accounting for approximately 12% of the total.