CVE-2018-7731 json
An issue was discovered in Exempi through 2.4.4.
published 2018-03-06 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-19446
- cvss
- 5.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 69%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- exempi Debian 14, Debian 13, Debian 12 2.4.5-1
debian advisories DEBIAN-CVE-2018-7731
- exempi openSUSE Tumbleweed 2.5.2-1.3
opensuse advisories openSUSE-SU-2024:10745-1
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2018-7731 updated cvss 3.3
exempi: NULL pointer dereference in XMPFiles/source/FormatSupport/WEBP_Support.cpp:WEBP::VP8XChunk allows for denial of service via crafted file
-
Red Hat Enterprise Linux 6 exempi Red Hat Enterprise Linux 7 exempi Red Hat Enterprise Linux 8 exempinot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
1.23% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugs.freedesktop.org https://bugs.freedesktop.org/show_bug.cgi?id=105247 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.5 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-476 NULL Pointer Dereference
References
-
cgit.freedesktop.org
/exempi/commit/?id=aabedb5e749dd59112a3fe1e8e08f2d934f56666
patch, third-party-advisory
-
bugs.freedesktop.org
/show_bug.cgi?id=105247
exploit, issue-tracking, third-party-advisory
-
usn.ubuntu.com
/3668-1/
vendor-advisory, third-party-advisory
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/BCFXKOOATZ2B5G3G7EBXZWVZHEABN4ZV/
vendor-advisory
Sources
- CVE List CVE-2018-7731
- NVD CVE-2018-7731
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.