High 7.5Published Feb 15, 2021

CVE-2021-27219An issue was discovered in GNOME GLib before 2.66.6 and 2.67.x before 2.67.3.

Updated under an hour ago (Oct 27, 2026, 8:20 PM ET)

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It affects Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP and 9 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

An issue was discovered in GNOME GLib before 2.66.6 and 2.67.x before 2.67.3. The function g_bytes_new has an integer overflow on 64-bit platforms due to an implicit cast from 64 bits to 32 bits. The overflow could potentially lead to memory corruption.

CVSS: 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
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 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
gnome glib gnome:glib	before 2.66.6; from 2.67.0 before 2.67.3	NVD
fedoraproject fedora fedoraproject:fedora	33; 34	NVD
netapp active_iq_unified_manager netapp:active_iq_unified_manager	all versions	NVD
netapp cloud_backup netapp:cloud_backup	all versions	NVD
netapp e-series_performance_analyzer netapp:e-series_performance_analyzer	all versions	NVD
broadcom brocade_fabric_operating_system_firmware broadcom:brocade_fabric_operating_system_firmware	all versions	NVD
debian debian_linux debian:debian_linux	9.0	NVD

References

References

https://gitlab.gnome.org/GNOME/glib/-/issues/2319	x-refsource-misc, exploit, issue-tracking, third-party-advisory
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E	mailing-list, x-refsource-mlist
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2REA7RVKN7ZHRLJOEGBRQKJIPZQPAELZ/	vendor-advisory, x-refsource-fedora
https://security.netapp.com/advisory/ntap-20210319-0004/	x-refsource-confirm, third-party-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJMPNDO4GDVURYQFYKFOWY5HAF4FTEPN/	vendor-advisory, x-refsource-fedora
https://security.gentoo.org/glsa/202107-13	vendor-advisory, x-refsource-gentoo, third-party-advisory
https://lists.debian.org/debian-lts-announce/2022/06/msg00006.html	mailing-list, x-refsource-mlist, third-party-advisory
https://cert-portal.siemens.com/productcert/html/ssa-398330.html

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.