High 7.5Published Feb 15, 2021

CVE-2021-27218An issue was discovered in GNOME GLib before 2.66.7 and 2.67.x before 2.67.4.

Updated under an hour ago (Oct 28, 2026, 7:00 AM ET)

Does this affect you?

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.

Do this next

Start free and add your stack

Free account, 1 product

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 2.66.7 and 2.67.x before 2.67.4. If g_byte_array_new_take() was called with a buffer of 4GB or more on a 64-bit platform, the length would be truncated modulo 2**32, causing unintended length truncation.

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 2.66.7; from 2.67.0 before 2.67.4	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/-/merge_requests/1942	x-refsource-misc, patch, vendor-advisory
https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1944	x-refsource-misc, patch, vendor-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://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E	mailing-list, x-refsource-mlist
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E	mailing-list, x-refsource-mlist
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
1–10 of 11

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.