CVE-2021-21808
CVSS v3
8.8
HIGH
EPSS Score
1.0 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A memory corruption vulnerability exists in the PNG png_palette_process functionality of Accusoft ImageGear 19.9. A specially crafted malformed file can lead to a heap buffer overflow. An attacker can provide malicious inputs to trigger this vulnerability.
Technical details
- Published
- 2021-06-11
Frequently asked questions
What is CVE-2021-21808?
A memory corruption vulnerability exists in the PNG png_palette_process functionality of Accusoft ImageGear 19.9. A specially crafted malformed file can lead to a heap buffer overflow. An attacker can provide malicious inputs to trigger this vulnerability.
Is CVE-2021-21808 actively exploited?
Active exploitation of CVE-2021-21808 has not been confirmed. Its EPSS score was 1.0% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-21808?
CVE-2021-21808 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2021-21808 affecting your environment?
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