CVE-2018-6406

Name: CVE-2018-6406
Creator: NVD / NIST
Published: 2018-01-30T21:29:00.4+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.04%

Last modified Jun 17, 2026

CVE-2018-6406 is a vulnerability of currently unknown severity. The function ParseVP9SuperFrameIndex in common/libwebm_util.cc in libwebm through 2018-01-30 does not validate the child_frame_length data obtained from a .webm file, which allows remote attackers to cause an information leak or a denial of service (heap-based buffer over-read and later out-of-bounds write), or possibly have unspecified other impact.. EPSS estimates a 2.04% chance of exploitation in the next 30 days.

Description

The function ParseVP9SuperFrameIndex in common/libwebm_util.cc in libwebm through 2018-01-30 does not validate the child_frame_length data obtained from a .webm file, which allows remote attackers to cause an information leak or a denial of service (heap-based buffer over-read and later out-of-bounds write), or possibly have unspecified other impact.

Metrics

EPSS Probability

2.04%

78.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Webmproject	Libwebm	<= 2018-01-30

References

Timeline

Published: Jan 30, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-6406?

How severe is CVE-2018-6406?

Severity scoring for CVE-2018-6406 is pending analysis. The EPSS model estimates a 2.04% probability of exploitation in the next 30 days.

How do I fix CVE-2018-6406?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-6406?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST