Is CVE-2021-23373 actively exploited?

No active exploitation of CVE-2021-23373 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-23373 be exploited remotely?

Yes. CVE-2021-23373 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-23373?

CVE-2021-23373 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-23373

CWE-1321Published: July 25, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

All versions of package set-deep-prop are vulnerable to Prototype Pollution via the main functionality.

NVD Source

Risk Analysis

The set-deep-prop package is vulnerable to prototype pollution, allowing attackers to manipulate object properties. This critical 9.8 CVSS flaw can lead to severe application-level security compromises.

No public exploit is known, and it is not in the CISA KEV. It is remotely exploitable with low attack complexity.

Recommended Action

Review dependencies and replace the set-deep-prop package with a secure alternative.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2021-23373 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.