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Known exploited · Microsoft

CVE-2013-1347: Microsoft Internet Explorer Remote Code Execution Vulnerability

What it is

This vulnerability may corrupt memory in a way that could allow an attacker to execute arbitrary code in the context of the current user within Internet Explorer.

Added March 3, 2022Due March 24, 2022CISA KEV catalog 2026.10.01

Vendor
Microsoft
Product
Internet Explorer
Added to KEV
March 3, 2022
CISA due date
March 24, 2022
Ransomware use
Unknown

What CISA requires

Apply updates per vendor instructions.

Forensic triage

No

What to do now

  1. Find every instance of Internet Explorer you run, including the forgotten ones, and check its version against the vendor advisory.
  2. Apply the vendor's fix or mitigation, before March 24, 2022 if you are bound by CISA's deadline, sooner if it faces the internet.
  3. Assume it was tried against you already: look for signs of exploitation from the date it was added, not from the day you patched.
  4. Until every instance is patched, block the attack at the edge: a WAF in blocking mode stops PHP and Node.js code injection payloads.

References

CVE-2013-1347 in the National Vulnerability Database

The Dome

Block it at the edge while you patch

The Dome's WAF runs the OWASP Core Rule Set in blocking mode and stops PHP and Node.js code injection payloads before they reach your application.

See the Dome

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Source: CISA Known Exploited Vulnerabilities Catalog (public domain), catalog version 2026.10.01.