CVE-2021-28021
CVSS v3
7.8
HIGH
EPSS Score
1.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Buffer overflow vulnerability in function stbi__extend_receive in stb_image.h in stb 2.26 via a crafted JPEG file.
Technical details
- Published
- 2021-10-15
Frequently asked questions
What is CVE-2021-28021?
Buffer overflow vulnerability in function stbi__extend_receive in stb_image.h in stb 2.26 via a crafted JPEG file.
Is CVE-2021-28021 actively exploited?
Active exploitation of CVE-2021-28021 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-2021-28021?
CVE-2021-28021 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2021-28021 affecting your environment?
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