Is CVE-2021-31922 actively exploited?

No active exploitation of CVE-2021-31922 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-31922 be exploited remotely?

Yes. CVE-2021-31922 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-31922?

CVE-2021-31922 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2021-31922

CWE-444Published: May 14, 2021· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

An HTTP Request Smuggling vulnerability in Pulse Secure Virtual Traffic Manager before 21.1 could allow an attacker to smuggle an HTTP request through an HTTP/2 Header. This vulnerability is resolved in 21.1, 20.3R1, 20.2R1, 20.1R2, 19.2R4, and 18.2R3.

NVD Source

Technical Analysis

CVE-2021-31922 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 full integrity compromise (data manipulation), with a CVSS base score of 7.5.