What is CVE-2018-11778?

CVE-2018-11778 is a high-severity vulnerability in Apache Ranger, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2018-10-05.

How severe is CVE-2018-11778?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Apache Ranger

CVE-2018-11778

UnixAuthenticationService in Apache Ranger 1.2.0 was updated to correctly handle user input to avoid Stack-based buffer overflow. Versions prior to 1.2.0 should be upgraded to 1.2.0

Vulnerability class: Buffer Overflow

Published 2018-10-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.040 (90.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.040 · newest: 0.040 · change: 0.000

Affected products

Apache Ranger
Apache Software Foundation Ranger — versions prior to 1.2.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cwiki.apache.org/confluence/display/RANGER/Vulnerabilities+found+in+Ranger (Vendor Advisory)
seclists.org/oss-sec/2018/q4/11 (mailing-list, Mailing List, Third Party Advisory)
lists.apache.org/thread.html/r04bc435a92911de4b52d2b98f169bd7cf2e8bbeb53b03788d… (mailing-list)
lists.apache.org/thread.html/rd88077a781ef38f7687c100f93992f4dda8aa101925050c4a… (mailing-list)

Frequently asked questions

What is CVE-2018-11778?: CVE-2018-11778 is a high-severity vulnerability in Apache Ranger, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2018-10-05.
How severe is CVE-2018-11778?: High severity. CVSS v3 base score is 8.8 out of 10.