Description
Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted XML file. NOTE: the vendor's position is that the product does not support the legacy SAX1 interface with custom callbacks; there is a crash even without crafted input.
Affected products
xmlsoft: libxml2
References7
- gitlab.gnome.org/GNOME/libxml2/-/issues/535 ExploitIssue TrackingPatch
- gitlab.gnome.org/GNOME/libxml2/-/issues/535 ExploitIssue TrackingPatch
- lists.debian.org/debian-lts-announce/2025/02/msg00028.html
- cert-portal.siemens.com/productcert/html/ssa-341067.html
- cert-portal.siemens.com/productcert/html/ssa-398330.html
- cert-portal.siemens.com/productcert/html/ssa-556635.html
- cert-portal.siemens.com/productcert/html/ssa-784301.html
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 65 · as of 5 November 2026
- CWE
- CWE-119
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