High 7.5Published Feb 25, 2022

CVE-2022-23308valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes.

Updated under an hour ago (Oct 26, 2026, 11:10 PM ET)

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It affects Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP and 38 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP

Exploited in the last 30 days

valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes.

CVSS: 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-416
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: mitre
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SINAMICS PERFECT HARMONY GH180 siemens:sinamics_perfect_harmony_gh180 (from the name)	all versions	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
xmlsoft libxml2 xmlsoft:libxml2	before 2.9.13	NVD
fedoraproject fedora fedoraproject:fedora	34	NVD
debian debian_linux debian:debian_linux	9.0	NVD
apple ipados apple:ipados	before 15.5	NVD
apple iphone_os apple:iphone_os	before 15.5	NVD
apple mac_os_x apple:mac_os_x	from 10.15.0 before 10.15.7; 10.15.7; 10.15.7; 10.15.7; 10.15.7; 10.15.7; 10.15.7; 10.15.7; and 5 more ranges	NVD
1–10 of 39

References

References

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LA3MWWAYZADWJ5F6JOUBX65UZAMQB7RF/	vendor-advisory
https://lists.debian.org/debian-lts-announce/2022/04/msg00004.html	mailing-list, third-party-advisory
http://seclists.org/fulldisclosure/2022/May/33	mailing-list, third-party-advisory
http://seclists.org/fulldisclosure/2022/May/37	mailing-list, third-party-advisory
http://seclists.org/fulldisclosure/2022/May/35	mailing-list, third-party-advisory
http://seclists.org/fulldisclosure/2022/May/38	mailing-list, third-party-advisory
http://seclists.org/fulldisclosure/2022/May/36	mailing-list, third-party-advisory
http://seclists.org/fulldisclosure/2022/May/34	mailing-list, third-party-advisory
https://www.oracle.com/security-alerts/cpujul2022.html	patch, third-party-advisory
https://support.apple.com/kb/HT213257	third-party-advisory
1–10 of 22

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.