CVE-2021-28026
CVSS v3
7.8
HIGH
EPSS Score
1.2 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
jpeg-xl v0.3.2 is affected by a heap buffer overflow in /lib/jxl/coeff_order.cc ReadPermutation. When decoding a malicous jxl file using djxl, an attacker can trigger arbitrary code execution or a denial of service.
Technical details
- Published
- 2021-03-05
Frequently asked questions
What is CVE-2021-28026?
jpeg-xl v0.3.2 is affected by a heap buffer overflow in /lib/jxl/coeff_order.cc ReadPermutation. When decoding a malicous jxl file using djxl, an attacker can trigger arbitrary code execution or a denial of service.
Is CVE-2021-28026 actively exploited?
Active exploitation of CVE-2021-28026 has not been confirmed. Its EPSS score was 1.2% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-28026?
CVE-2021-28026 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2021-28026 affecting your environment?
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