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CVE-2018-0802

HIGH 7.8 KNOWN EXPLOITED RANSOMWARE PoC CATALOGUED ALL-YEARS

Published 2018-01-10 · Last modified 2025-10-21 · microsoft · NVD: Analyzed

Equation Editor in Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016 allow a remote code execution vulnerability due to the way objects are handled in memory, aka "Microsoft Office Memory Corruption Vulnerability". This CVE is unique from CVE-2018-0797 and CVE-2018-0812.

ACTIVELY EXPLOITED

Confirmed exploited in the wild — in CISA KEV since 2021-11-03, linked to ransomware campaigns. Patch or mitigate now.

Exploitation likelihood

93.3%chance of exploitation in 30 days · 100th percentile

● In CISA KEV (2021-11-03)● Catalogued PoC◆ SSVC: exploitation active, automatable no

Impact if exploited

7.8CVSS 3.1 · HIGH · ADP

  • ConfidentialityHigh
  • IntegrityHigh
  • AvailabilityHigh

What an attacker needs

  • ⚠Access: Requires local access to the host
  • ✓Privileges: No account or privileges required
  • ⚠User interaction: A user must take an action (click / open a file)
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

Public PoC or exploit resources are catalogued below.

Listed by the named source; Vulnpedia has not tested these resources.

PoC data: JSON

Resource commands

curl -s https://vulnpedia.com/cve/CVE-2018-0802/poc.jsonMachine-readable PoC index for this CVE (for automation).

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Microsoft Corporation Microsoft

Products Equation Editor Office Office Compatibility Pack Word

Weakness (CWE)

  • CWE-787: Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References and research data (JSON)

Unverified PoC candidates

Catalogue matches for further research. These repositories have not been validated as working exploits.

6 candidates

Additional exploitation reports

Source-specific reports, separate from CISA KEV. Repeated observations from one source are not independent confirmations.

44 more source reports

Known Affected Software Configurations

VendorProductVersion range
MicrosoftOffice2007
MicrosoftOffice2010
MicrosoftOffice2013
MicrosoftOffice2016
MicrosoftOffice2016
MicrosoftOffice Compatibility Pack*
MicrosoftWord2007
MicrosoftWord2010
MicrosoftWord2013
MicrosoftWord2013
MicrosoftWord2016

All CVSS metrics

  • HIGH 7.8 v3.1 · ADP Primary
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • HIGH 7.8 v3.1 · NVD Primary
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • HIGH 9.3 v2.0 · NVD Primary
    AV:N/AC:M/Au:N/C:C/I:C/A:C

References

Exploit-tagged references (not proof of a PoC)

Patches & mitigations

Advisories

Technical & other

Sources: NVD · CVE.org · All sources and attribution · EPSS