Is CVE-2021-21793 actively exploited?

No active exploitation of CVE-2021-21793 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-21793 be exploited remotely?

Yes. CVE-2021-21793 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-21793?

CVE-2021-21793 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2021-21793

CWE-131Published: July 8, 2021· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

An out-of-bounds write vulnerability exists in the JPG sof_nb_comp header processing functionality of Accusoft ImageGear 19.8 and 19.9. A specially crafted malformed file can lead to memory corruption. An attacker can provide a malicious file to trigger this vulnerability.

NVD Source

Technical Analysis

CVE-2021-21793 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

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 8.8.