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CVE-2018-0802

94
FAUCET Score

CVE-2018-0802 is a critical memory corruption vulnerability in Microsoft Office's Equation Editor, affecting Office 2007, 2010, 2013, and 2016. With a CVSS score of 7.8 (High), it allows unauthenticated remote code execution with low attack complexity, potentially leading to full compromise of affected systems. This vulnerability is actively exploited in the wild, as confirmed by its presence in the KEV catalog and an exceptionally high EPSS score. Despite no public Metasploit or ExploitDB modules, it garners significant community discussion and media coverage, indicating widespread awareness and ongoing exploitation by advanced persistent threat (APT) groups.

Impacted Technologies

VendorProductVersion(s)CPE
2007CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2007:sp3:*:*:*:*:*:*
2010CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2010:sp2:*:*:*:*:*:*
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2013:sp1:*:*:-:*:*:*
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2016:*:*:*:*:*:*:*
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2016:*:*:*:click-to-run:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
87.42%
Probability of exploitation in next 30 days
EPSS Percentile
99.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Added to KEV · Nov 3, 2021
This CVE's current EPSS score of 0.8742 is in the 100th percentile among its peer group of 11,616 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (19)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office 2016 (32-bit edition)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office 2016 (64-bit edition)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Word 2016 (32-bit edition)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Word 2016 (64-bit edition)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office 2016 Click-to-Run (C2R) for 32-bit editions
microsoftpatch availablevia msrc
Product: Microsoft Office 2016 Click-to-Run (C2R) for 64-bit editions
microsoftpatch availablevia msrc
Product: Microsoft Office 2007 Service Pack 3
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office 2010 Service Pack 2 (32-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office 2010 Service Pack 2 (64-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office 2013 Service Pack 1 (32-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office 2013 Service Pack 1 (64-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office Compatibility Pack Service Pack 3
View patch
microsoftpatch availablevia msrc
Product: Microsoft Word 2007 Service Pack 3
View patch
microsoftpatch availablevia msrc
Product: Microsoft Word 2010 Service Pack 2 (32-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Word 2010 Service Pack 2 (64-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Word 2013 RT Service Pack 1
microsoftpatch availablevia msrc
Product: Microsoft Word 2013 Service Pack 1 (32-bit editions)
View patch
microsoftpatch availablevia msrc
Product: Microsoft Word 2013 Service Pack 1 (64-bit editions)
View patch

Vendor Advisories (1)

microsoft2018-Jan/CVE-2018-0802Important

Microsoft Office Memory Corruption Vulnerability

Jan 9, 2018

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
0patch.blogspot.com / 2018/01/the-bug-that-killed-equation-editor-how.html
ExploitThird Party Advisory
github.com / rxwx/CVE-2018-0802
ExploitThird Party Advisory
github.com / zldww2011/CVE-2018-0802_POC
Third Party Advisory
portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-0802
PatchVendor Advisory
research.checkpoint.com / another-office-equation-rce-vulnerability
Exploit
securityfocus.com / bid/102347
Broken LinkThird Party AdvisoryVDB Entry
securitytracker.com / id/1040153
Broken LinkThird Party AdvisoryVDB Entry