CVE-2020-21598
CVSS v3
8.8
HIGH
EPSS Score
1.8 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
libde265 v1.0.4 contains a heap buffer overflow in the ff_hevc_put_unweighted_pred_8_sse function, which can be exploited via a crafted a file.
Technical details
- Published
- 2021-09-16
Frequently asked questions
What is CVE-2020-21598?
libde265 v1.0.4 contains a heap buffer overflow in the ff_hevc_put_unweighted_pred_8_sse function, which can be exploited via a crafted a file.
Is CVE-2020-21598 actively exploited?
Active exploitation of CVE-2020-21598 has not been confirmed. Its EPSS score was 1.8% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-21598?
CVE-2020-21598 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2020-21598 affecting your environment?
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