CVE-2026-32778 Details
Description
libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier ouf-of-memory condition.
A NULL pointer dereference vulnerability has been identified in libexpat versions prior to 2.7.5. The issue arises in the setContext function, where a NULL pointer can be dereferenced during a retry after an earlier out-of-memory condition. This vulnerability can lead to a denial-of-service by causing a crash or unintended behavior in applications that use libexpat for XML parsing.
Users can update to libexpat version 2.7.5 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 17, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://cert-portal.siemens.com/productcert/html/ssa-082556.html | siemens-SADP | |
| https://github.com/libexpat/libexpat/pull/1159 | [email protected] | Issue TrackingPatch |
| https://github.com/libexpat/libexpat/pull/1163 | [email protected] | Issue TrackingPatch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| libexpat project libexpat | < 2.7.5 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 14, 2026 | CVE Modified | siemens-SADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 17, 2026 | Initial Analysis | [email protected] |
| Mar 16, 2026 | New CVE Received | [email protected] |