CVE-2021-36531

8.8 highEPSS 1.1%

High (8.8) in miniupnp project ngiflib. EPSS 1.1% chance of exploitation in the next 30 days.

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.

Severity

8.8 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 1.1% chance of exploitation in the next 30 days; higher than 64% of CVEs (scores of 2026-10-31)
CWE: CWE-787
Published: 2021-08-27
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19