Out-of-bounds Read in Libucl
CVE-2026-0708
A flaw was found in libucl. A remote attacker could exploit this by providing a specially crafted Universal Configuration Language (UCL) input that contains a key with an embedded null byte. This can cause a segmentation fault (SEGV fault)…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (30.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:H.
Affected products
- Libucl — versions 3e7f023e184e06f30fb5792dacd9dd0f8b692f1b
- Vstakhov Libucl
Weakness classification (CWE)
References
- patrick@puiterwijk.org (x_refsource_REDHAT, Third Party Advisory, vdb-entry)
- patrick@puiterwijk.org (x_refsource_REDHAT, issue-tracking, Third Party Advisory, Issue Tracking)
- patrick@puiterwijk.org (Exploit, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-0708?
- CVE-2026-0708 is a high-severity vulnerability in Libucl, classified under Out-of-bounds Read. CVSS score: 8.3/10. Published 2026-03-17.
- How severe is CVE-2026-0708?
- High severity. CVSS v3 base score is 8.3 out of 10.