What is CVE-2014-125026?

CVE-2014-125026 is a critical-severity vulnerability in Cloudflare Golz4, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-12-27.

How severe is CVE-2014-125026?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Cloudflare Golz4

CVE-2014-125026

LZ4 bindings use a deprecated C API that is vulnerable to memory corruption, which could lead to arbitrary code execution if called with untrusted user input.

Vulnerability class: Buffer Overflow

Published 2022-12-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (63.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Cloudflare Golz4
Github.com/cloudflare/golz4 — versions 0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/cloudflare/golz4/commit/199f5f7878062ca17a98e079f2dbe1205e2ed898 (Patch, Third Party Advisory)
github.com/cloudflare/golz4/issues/5 (Patch, Third Party Advisory, Issue Tracking)
pkg.go.dev/vuln/GO-2020-0022 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2014-125026?: CVE-2014-125026 is a critical-severity vulnerability in Cloudflare Golz4, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-12-27.
How severe is CVE-2014-125026?: Critical severity. CVSS v3 base score is 9.8 out of 10.