Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2023-28484

22
FAUCET Score

CVE-2023-28484 is a NULL pointer dereference vulnerability affecting libxml2 versions prior to 2.10.4, specifically within the xmlSchemaFixupComplexType function when parsing invalid XSD schemas. This flaw carries a CVSS score of 6.5 (Medium), indicating it can be triggered remotely with low attack complexity, requiring user interaction, and leading to a denial of service. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.10.4CPE matchmatch criteria
cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.09%
Probability of exploitation in next 30 days
EPSS Percentile
61.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0109 is in the 74th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

microsoftpatch availablevia msrc
Product: cbl2 libxml2 2.10.4-1 on CBL Mariner 2.0Fixed in: 2.10.4-1
microsoftpatch availablevia msrc
Product: 16873-16823Fixed in: 2.10.4-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 2.10.4-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 2.10.4-1
redhatpatch availablevia redhat_api
Product: Text-Only JBCSFixed in: libxml2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libxml2-0:2.9.7-16.el8_8.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Extended Update SupportFixed in: libxml2-0:2.9.7-13.el8_6.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: libxml2-0:2.9.13-3.el9_2.1
View patch

Vendor Advisories (3)

microsoft2023-Aug/CVE-2023-28484

CVE-2023-28484

Aug 8, 2023
microsoft2023-Apr/CVE-2023-28484Moderate

In libxml2 before 2.10.4 parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c.

Apr 11, 2023
redhatCVE-2023-28484Moderate

libxml2: NULL dereference in xmlSchemaFixupComplexType

Apr 11, 2023

References

gitlab.gnome.org / GNOME/libxml2/-/issues/491
ExploitIssue TrackingPatchVendor Advisory
gitlab.gnome.org / GNOME/libxml2/-/releases/v2.10.4
Release Notes
lists.debian.org / debian-lts-announce/2023/04/msg00031.html
Mailing ListThird Party Advisory
security.netapp.com / advisory/ntap-20230601-0006
security.netapp.com / advisory/ntap-20240201-0005