Internet Explorer Scripting Engine Memory Corruption RCE
CVE-2020-0968 is a remote code execution vulnerability in the Internet Explorer scripting engine caused by improper handling of objects in memory. Microsoft describes it as a scripting engine memory corruption vulnerability. The issue can be triggered when Internet Explorer processes malicious content that causes memory corruption in the scripting engine, leading to attacker-controlled code execution in the context of the current user. Supporting content also places this flaw in the broader class of Internet Explorer/JScript memory corruption issues that were exploited in the wild in 2020, including delivery via malicious RTF content that retrieved an HTML page exploiting the vulnerability.
Are you exposed to this one?
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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
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A related scripting engine vulnerability patched by Microsoft and reportedly exploited in the wild, though the article says its relation to the same bug class is unknown.
An Internet Explorer legacy JavaScript engine vulnerability used by XDSpy for client-side exploitation via a malicious RTF/HTML chain; significant because XDSpy used it as a 1-day exploit after a vendor patch and before public proof-of-concept details were widely available.
A memory corruption vulnerability in a web browser scripting engine; noted as exploited in the wild (CISA KEV).
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.