Is CVE-2022-36937 actively exploited?

No active exploitation of CVE-2022-36937 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-36937 be exploited remotely?

Yes. CVE-2022-36937 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-36937?

CVE-2022-36937 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2022-36937

NVD-CWE-noinfoPublished: May 10, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

HHVM 4.172.0 and all prior versions use TLS 1.0 for secure connections when handling tls:// URLs in the stream extension. TLS1.0 has numerous published vulnerabilities and is deprecated. HHVM 4.153.4, 4.168.2, 4.169.2, 4.170.2, 4.171.1, 4.172.1, 4.173.0 replaces TLS1.0 with TLS1.3.

Applications that call stream_socket_server or stream_socket_client functions with a URL starting with tls:// are affected.

NVD Source

Technical Analysis

CVE-2022-36937 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.