Description
In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for m_groupSize.
Affected products
libexpat_project: libexpat; netapp: active iq unified manager; netapp: clustered data ontap; netapp: hci baseboard management controller; netapp: oncommand workflow automation; netapp: solidfire \& hci management node; tenable: nessus; siemens: sinema remote connect server
References10
- www.openwall.com/lists/oss-security/2022/01/17/3 Mailing ListPatchThird Party Advisory
- cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf PatchThird Party Advisory
- github.com/libexpat/libexpat/issues/532 ExploitIssue TrackingPatchThird Party Advisory
- github.com/libexpat/libexpat/pull/538 PatchThird Party Advisory
- www.openwall.com/lists/oss-security/2022/01/17/3 Mailing ListPatchThird Party Advisory
- cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf PatchThird Party Advisory
- github.com/libexpat/libexpat/issues/532 ExploitIssue TrackingPatchThird Party Advisory
- github.com/libexpat/libexpat/pull/538 PatchThird Party Advisory
- security.gentoo.org/glsa/202209-24 Third Party Advisory
- security.netapp.com/advisory/ntap-20220121-0006/ Third Party Advisory
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 4% percentile: 91 · as of 4 November 2026
- CWE
- CWE-190
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