What is CVE-2018-25012?

CVE-2018-25012 is a critical-severity vulnerability in Webmproject Libwebp, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2021-05-21.

How severe is CVE-2018-25012?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Out-of-bounds Read in Webmproject Libwebp

CVE-2018-25012

A heap-based buffer overflow was found in libwebp in versions before 1.0.1 in GetLE24().

Vulnerability class: Buffer Overflow

Published 2021-05-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.021 (80.5th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

Webmproject Libwebp
Red Hat Enterprise Linux — versions 8.0
Libwebp — versions libwebp 1.0.1

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
chromium.googlesource.com/webm/libwebp/+/95fd65070662e01cc9170c4444f5c0859a7100… (Third Party Advisory)
bugs.chromium.org/p/oss-fuzz/issues/detail (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2018-25012?: CVE-2018-25012 is a critical-severity vulnerability in Webmproject Libwebp, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2021-05-21.
How severe is CVE-2018-25012?: Critical severity. CVSS v3 base score is 9.1 out of 10.