CVE-2021-23841 Archives - TuxCare

Check the status of CVEs. Learn More.

 CVE Status (opens in new tab)

php2shell patches (CVE-2026-109618 and CVE-2026-109619) for EOL PHP are out now. With sales replies slower than usual due to high demand, the fastest route to patched packages is to buy ELS for Runtimes online (opens in new tab). Read the patch FAQ

Blog Series

CVE-2021-23841

Extended Lifecycle Support service providing...

A flaw in the way OpenSSL API function X509_issuer_and_serial_hash() has been disclosed that may lead applications using it to crash, causing a potential denial-of-service (DoS) to their users.   The...