Low 3.7Published Jun 13, 2025

CVE-2025-6052Glib: integer overflow in g_string_maybe_expand() leading to potential buffer overflow in glib gstring

Updated under an hour ago (Nov 2, 2026, 12:23 AM ET)

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It affects Red Hat Enterprise Linux 10 and 3 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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A flaw was found in how GLib’s GString manages memory when adding data to strings. If a string is already very large, combining it with more input can cause a hidden overflow in the size calculation. This makes the system think it has enough memory when it doesn’t. As a result, data may be written past the end of the allocated memory, leading to crashes or memory corruption.

CVSS: 3.7 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-190
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Modified
Record last updated: Jun 2, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	10	CNA record
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V4.0	CISA ADP
Siemens SIMATIC CN 4100 siemens:simatic_cn_4100 (from the name)	before V5.0	CISA ADP
gnome glib gnome:glib	from 2.75.3 through 2.84.3	NVD

References

References

https://access.redhat.com/security/cve/CVE-2025-6052	vdb-entry, x-refsource-redhat, third-party-advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2372666	issue-tracking, x-refsource-redhat, third-party-advisory
https://cert-portal.siemens.com/productcert/html/ssa-032379.html
https://cert-portal.siemens.com/productcert/html/ssa-253495.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.