CVE-2018-7731

Name: CVE-2018-7731
Creator: NVD / NIST
Published: 2018-03-06T18:29:00.58+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.32%

Last modified Jun 17, 2026

CVE-2018-7731 is a vulnerability of currently unknown severity. An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp does not check whether a bitstream has a NULL value, leading to a NULL pointer dereference in the WEBP::VP8XChunk class.. EPSS estimates a 1.32% chance of exploitation in the next 30 days.

Description

An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp does not check whether a bitstream has a NULL value, leading to a NULL pointer dereference in the WEBP::VP8XChunk class.

Metrics

EPSS Probability

1.32%

67.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Exempi Project	Exempi	<= 2.4.4
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	17.10

References

https://bugs.freedesktop.org/show_bug.cgi?id=105247Exploit, Issue Tracking, Third Party Advisory
https://cgit.freedesktop.org/exempi/commit/?id=aabedb5e749dd59112a3fe1e8e08f2d934f56666Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BCFXKOOATZ2B5G3G7EBXZWVZHEABN4ZV/
https://usn.ubuntu.com/3668-1/Third Party Advisory
https://bugs.freedesktop.org/show_bug.cgi?id=105247Exploit, Issue Tracking, Third Party Advisory
https://cgit.freedesktop.org/exempi/commit/?id=aabedb5e749dd59112a3fe1e8e08f2d934f56666Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BCFXKOOATZ2B5G3G7EBXZWVZHEABN4ZV/
https://usn.ubuntu.com/3668-1/Third Party Advisory

Timeline

Published: Mar 6, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-7731?

How severe is CVE-2018-7731?

Severity scoring for CVE-2018-7731 is pending analysis. The EPSS model estimates a 1.32% probability of exploitation in the next 30 days.

How do I fix CVE-2018-7731?

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-2018-7731?

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

Scan your code now

Source: NVD / NIST