CVE-2021-21807
CVSS v3
9.8
CRITICAL
EPSS Score
1.5 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
An integer overflow vulnerability exists in the DICOM parse_dicom_meta_info functionality of Accusoft ImageGear 19.9. A specially crafted malformed file can lead to a stack-based buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.
Technical details
- Published
- 2021-07-07
Frequently asked questions
What is CVE-2021-21807?
An integer overflow vulnerability exists in the DICOM parse_dicom_meta_info functionality of Accusoft ImageGear 19.9. A specially crafted malformed file can lead to a stack-based buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.
Is CVE-2021-21807 actively exploited?
Active exploitation of CVE-2021-21807 has not been confirmed. Its EPSS score was 1.5% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-21807?
CVE-2021-21807 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-21807 affecting your environment?
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