What is CVE-2016-9598?

CVE-2016-9598 is a medium-severity vulnerability in Xmlsoft Libxml2, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2018-08-16.

How severe is CVE-2016-9598?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2016-9598 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Out-of-bounds Read in Xmlsoft Libxml2

CVE-2016-9598

libxml2, as used in Red Hat JBoss Core Services, allows context-dependent attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted XML document. NOTE: this vulnerability exists because of a missing fix for CVE-2016-4483.

Vulnerability class: Buffer Overflow

Published 2018-08-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (67.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
access.redhat.com/errata/RHSA-2018:2486 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2016-9598?: CVE-2016-9598 is a medium-severity vulnerability in Xmlsoft Libxml2, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2018-08-16.
How severe is CVE-2016-9598?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2016-9598 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.