CVE-2022-23852

CRITICAL

libexpat < 2.4.4 - Integer Overflow in XML_GetBuffer

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2022-23852. PoCs published by Satheesh575555.

AI-analyzed exploit summary This repository appears to be a fork or snapshot of the Expat library (version 2.2.6) with references to CVE-2022-23852, but it lacks actual exploit code or a proof-of-concept. The files included are standard library and build configuration files.

Description

Expat (aka libexpat) before 2.4.4 has a signed integer overflow in XML_GetBuffer, for configurations with a nonzero XML_CONTEXT_BYTES.

Exploits (1)

nomisec WRITEUP
by Satheesh575555 · poc
https://github.com/Satheesh575555/external_expat_AOSP10_r33_CVE-2022-23852

This repository appears to be a fork or snapshot of the Expat library (version 2.2.6) with references to CVE-2022-23852, but it lacks actual exploit code or a proof-of-concept. The files included are standard library and build configuration files.

Classification
Writeup 90%
Attack Type
Other
Complexity
Trivial
Reliability
Theoretical
Target: Expat (libexpat) 2.2.6
No auth needed
Prerequisites: None identified
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (8)

Core 8
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://github.com/libexpat/libexpat/pull/550
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2022/dsa-5073
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html
Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuapr2022.html
Third Party Advisory x_refsource_confirm
https://www.tenable.com/security/tns-2022-05
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20220217-0001/
Third Party Advisory x_refsource_confirm
https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202209-24

Scores

CVSS v3 9.8
EPSS 0.0465
EPSS Percentile 90.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-190
Status published
Products (7)
debian/debian_linux 9.0
libexpat_project/libexpat < 2.4.4
netapp/clustered_data_ontap
netapp/oncommand_workflow_automation
oracle/communications_metasolv_solution 6.3.1
siemens/sinema_remote_connect_server < 3.1
tenable/nessus < 8.15.3
Published Jan 24, 2022
Tracked Since Feb 18, 2026