What’s Vulnerable › Vulnerabilities

CVE-2021-36531

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-27 · updated 2026-06-17
• Weakness: CWE-787

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.

Affected products

• miniupnp project Ngiflib: 0.4

References

• https://github.com/miniupnp/ngiflib/issues/18
• https://github.com/miniupnp/ngiflib/issues/18

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