NSS Memory corruption when decoding DSA signatures - CVE-2021-43527

Solution Verified - Updated -


A memory corruption flaw, which may allow unauthorized remote code execution, was found in the method Network Security Services (NSS) verified certificates. The issue is assigned CVE-2021-43527 and has been rated with a severity impact of Critical.


  • Red Hat Enterprise Linux 6, 7, and 8
  • Red Hat Virtualization 4

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content