CVE-2021-21949
CVSS v3
8.8
HIGH
EPSS Score
1.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
An improper array index validation vulnerability exists in the JPEG-JFIF Scan header parser functionality of Accusoft ImageGear 19.10. A specially-crafted file can lead to an out-of-bounds write and potential code exectuion. An attacker can provide a malicious file to trigger this vulnerability.
Technical details
- Published
- 2022-04-14
Frequently asked questions
What is CVE-2021-21949?
An improper array index validation vulnerability exists in the JPEG-JFIF Scan header parser functionality of Accusoft ImageGear 19.10. A specially-crafted file can lead to an out-of-bounds write and potential code exectuion. An attacker can provide a malicious file to trigger this vulnerability.
Is CVE-2021-21949 actively exploited?
Active exploitation of CVE-2021-21949 has not been confirmed. Its EPSS score was 1.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-21949?
CVE-2021-21949 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2021-21949 affecting your environment?
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