Buffer overflow in Red Hat Directory Server 11
CVE-2026-78701
A flaw was found in 389-ds-base. A remote, authenticated attacker could exploit a vulnerability in the Simple Authentication and Security Layer (SASL) UNBIND process. By sending a specially crafted request, the attacker can cause a connection to stall, leading to resource exhaustion and a Denial of Service (DoS) for the server.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.008 (54.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.008 · change: +0.004
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-78701 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- access.redhat.com/errata/RHSA-2026:64784 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:64785 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:65119 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-78701?
- CVE-2026-78701 is a medium-severity vulnerability in Red Hat Directory Server 11, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2026-08-25.
- How severe is CVE-2026-78701?
- Medium severity. CVSS v3 base score is 6.5 out of 10.