CVE-2018-6548

Name: CVE-2018-6548
Creator: NVD / NIST
Published: 2018-02-02T09:29:00.85+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.41%

Last modified Jun 17, 2026

CVE-2018-6548 is a vulnerability of currently unknown severity. A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was initialized once before, its property frame_ would not be changed because of code in vp9parser::Vp9HeaderParser::SetFrame. EPSS estimates a 1.41% chance of exploitation in the next 30 days.

Description

A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was initialized once before, its property frame_ would not be changed because of code in vp9parser::Vp9HeaderParser::SetFrame. Its frame_ could be freed while the corresponding pointer would not be updated, leading to a dangling pointer. This is related to the function OutputCluster in webm_info.cc.

Metrics

EPSS Probability

1.41%

69.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Webmproject	Libwebm	<= 1.0.0.27

References

https://bugs.chromium.org/p/webm/issues/detail?id=1493Permissions Required
https://github.com/dwfault/PoCs/blob/master/libwebm%20Vp9HeaderParser%20UAF%20by%20PrintVP9Info/libwebm%20Vp9HeaderParser%20UAF%20by%20PrintVP9Info.mdExploit, Third Party Advisory
https://bugs.chromium.org/p/webm/issues/detail?id=1493Permissions Required
https://github.com/dwfault/PoCs/blob/master/libwebm%20Vp9HeaderParser%20UAF%20by%20PrintVP9Info/libwebm%20Vp9HeaderParser%20UAF%20by%20PrintVP9Info.mdExploit, Third Party Advisory

Timeline

Published: Feb 2, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-6548?

How severe is CVE-2018-6548?

Severity scoring for CVE-2018-6548 is pending analysis. The EPSS model estimates a 1.41% probability of exploitation in the next 30 days.

How do I fix CVE-2018-6548?

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-2018-6548?

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

Scan your code now

Source: NVD / NIST