Microsoft Office Equation Editor Memory Corruption RCE
CVE-2018-0798 is a remote code execution vulnerability in Microsoft Office Equation Editor affecting Microsoft Office 2007, 2010, 2013, and 2016. The issue is described by Microsoft as a memory corruption vulnerability caused by the way Equation Editor handles objects in memory. In observed exploitation, attackers embedded malicious OLE content in weaponized Office documents, including RTF and Excel files, which triggered Equation Editor when the document was opened. Successful exploitation allowed attacker-supplied shellcode or follow-on payloads to be executed on the victim system.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Microsoft Office vulnerability used by exploit-laden documents to execute arbitrary code.
A Microsoft Office remote code execution vulnerability exploited via malicious Office documents to run arbitrary code.
A Microsoft Office remote code execution vulnerability leveraged via malicious Office documents to execute arbitrary code on victim systems.
A Microsoft Office remote code execution vulnerability exploited via crafted Office documents to execute arbitrary code, observed as an email-borne exploit in this reporting period.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.