CVE-2018-20533

6.5 mediumEPSS 2.1%

Medium (6.5). EPSS 2.1% chance of exploitation in the next 30 days.

There is a NULL pointer dereference at ext/testcase.c (function testcase_str2dep_complex) in libsolvext.a in libsolv through 0.7.2 that will cause a denial of service.

Severity

CVSS 3.0

6.5 medium

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS: 2.1% chance of exploitation in the next 30 days; higher than 81% of CVEs (scores of 2026-10-31)
CWE: CWE-476
Published: 2018-12-28
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

canonical:ubuntu_linux
opensuse:libsolv

References

http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00057.html
https://access.redhat.com/errata/RHSA-2019:2290
https://bugzilla.redhat.com/show_bug.cgi?id=1652599
https://github.com/openSUSE/libsolv/pull/291
https://usn.ubuntu.com/3916-1/

Check your stack JSON