01 Record

CVE-2018-14404

A NULL pointer dereference vulnerability exists in the xpath.c:xmlXPathCompOpEval() function of libxml2 through 2.9.8 when parsing an invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case.

MediumPUBLISHEDCNA: mitre

CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

View raw JSON

02 Description

A NULL pointer dereference vulnerability exists in the xpath.c:xmlXPathCompOpEval() function of libxml2 through 2.9.8 when parsing an invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case.

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

3.65% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 88.8% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2018-07-19 13:00Z8 YR AGO

Last updated

2025-12-03 21:07Z9 MO AGO

Reserved

2018-07-19

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weaknesses

CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

f5ea8e3193decacc9668e7cc5715fcdb4f246f1075bcaae6cc3c803937f54a0d

05 Affected products

VendorProductVersionsPlatforms

canonicalubuntu_linuxNot specified—

debiandebian_linuxNot specified—

redhatansible_towerNot specified—

redhatenterprise_linuxNot specified—

redhatjboss_core_servicesNot specified—

redhatjboss_enterprise_web_serverNot specified—

xmlsoftlibxml2Not specified—

06 References

lists.debian.org[debian-lts-announce] 20180927 [SECURITY] [DLA 1524-1] libxml2 security updatehttps://lists.debian.org/debian-lts-announce/2018/09/msg00035.htmlmailing-listx_refsource_MLIST
gitlab.gnome.orghttps://gitlab.gnome.org/GNOME/libxml2/issues/10x_refsource_MISC
usn.ubuntu.comUSN-3739-1https://usn.ubuntu.com/3739-1/vendor-advisoryx_refsource_UBUNTU
bugs.debian.orghttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=901817x_refsource_MISC
usn.ubuntu.comUSN-3739-2https://usn.ubuntu.com/3739-2/vendor-advisoryx_refsource_UBUNTU
bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1595985x_refsource_MISC
access.redhat.comRHSA-2019:1543https://access.redhat.com/errata/RHSA-2019:1543vendor-advisoryx_refsource_REDHAT
security.netapp.comhttps://security.netapp.com/advisory/ntap-20190719-0002/x_refsource_CONFIRM
lists.debian.org[debian-lts-announce] 20200909 [SECURITY] [DLA 2369-1] libxml2 security updatehttps://lists.debian.org/debian-lts-announce/2020/09/msg00009.htmlmailing-listx_refsource_MLIST

01 Record index

CVE-2018-14404

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2018-14404

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References