CVE-2021-36531
CVSS v3
8.8
HIGH
EPSS Score
1.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
ngiflib 0.4 has a heap overflow in GetByte() at ngiflib.c:70 in NGIFLIB_NO_FILE mode, GetByte() reads memory buffer without checking the boundary.
Technical details
- Published
- 2021-08-27
Frequently asked questions
What is CVE-2021-36531?
ngiflib 0.4 has a heap overflow in GetByte() at ngiflib.c:70 in NGIFLIB_NO_FILE mode, GetByte() reads memory buffer without checking the boundary.
Is CVE-2021-36531 actively exploited?
Active exploitation of CVE-2021-36531 has not been confirmed. Its EPSS score was 1.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-36531?
CVE-2021-36531 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2021-36531 affecting your environment?
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