What is CVE-2018-10677?

CVE-2018-10677 is a high-severity vulnerability in Miniupnp Project Ngiflib, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2018-05-02.

How severe is CVE-2018-10677?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Miniupnp Project Ngiflib

CVE-2018-10677

The DecodeGifImg function in ngiflib.c in MiniUPnP ngiflib 0.4 lacks certain checks against width and height, which allows remote attackers to cause a denial of service (WritePixels heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted GIF file.

Vulnerability class: Buffer Overflow

Published 2018-05-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.015 (73.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: -0.000

Affected products

Miniupnp Project Ngiflib — versions 0.4

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/miniupnp/ngiflib/commit/b588a2249c7abbfc52173e32ee11d6facef82f89 (Patch)
github.com/miniupnp/ngiflib/issues/1 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-10677?: CVE-2018-10677 is a high-severity vulnerability in Miniupnp Project Ngiflib, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2018-05-02.
How severe is CVE-2018-10677?: High severity. CVSS v3 base score is 8.8 out of 10.