CVE-2021-21833
CVSS v3
9.8
CRITICAL
EPSS Score
1.4 %
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 TIF IP_planar_raster_unpack functionality of Accusoft ImageGear 19.9. A specially crafted malformed file can lead to an out-of-bounds write. An attacker can provide a malicious file to trigger this vulnerability.
Technical details
- Published
- 2021-06-11
Frequently asked questions
What is CVE-2021-21833?
An improper array index validation vulnerability exists in the TIF IP_planar_raster_unpack functionality of Accusoft ImageGear 19.9. A specially crafted malformed file can lead to an out-of-bounds write. An attacker can provide a malicious file to trigger this vulnerability.
Is CVE-2021-21833 actively exploited?
Active exploitation of CVE-2021-21833 has not been confirmed. Its EPSS score was 1.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-21833?
CVE-2021-21833 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-21833 affecting your environment?
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