Description
A flaw was found in GLib, which is vulnerable to an integer overflow in the g_string_insert_unichar() function. When the position at which to insert the character is large, the position will overflow, leading to a buffer underwrite.
Published: 2025-05-06
Score: 4.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

Vendor Workaround

Currently, no mitigation is available for this vulnerability.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4412-1 glib2.0 security update
EUVD EUVD EUVD-2025-13592 A flaw was found in GLib, which is vulnerable to an integer overflow in the g_string_insert_unichar() function. When the position at which to insert the character is large, the position will overflow, leading to a buffer underwrite.
Ubuntu USN Ubuntu USN USN-7532-1 GLib vulnerability
History

Wed, 08 Oct 2025 16:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:rhivos:1
Vendors & Products Redhat rhivos

Fri, 03 Oct 2025 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhivos
CPEs cpe:/o:redhat:rhivos:1
Vendors & Products Redhat rhivos

Tue, 02 Sep 2025 03:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Tus
CPEs cpe:/o:redhat:rhel_aus:8.2::baseos
cpe:/o:redhat:rhel_aus:8.6::baseos
cpe:/o:redhat:rhel_e4s:8.6::baseos
cpe:/o:redhat:rhel_e4s:8.8::baseos
cpe:/o:redhat:rhel_tus:8.6::baseos
cpe:/o:redhat:rhel_tus:8.8::baseos
Vendors & Products Redhat rhel Tus
References

Tue, 02 Sep 2025 02:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Aus
Redhat rhel Eus Long Life
CPEs cpe:/o:redhat:rhel_aus:8.4::baseos
cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
Vendors & Products Redhat rhel Aus
Redhat rhel Eus Long Life
References

Thu, 07 Aug 2025 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat insights Proxy
CPEs cpe:/a:redhat:insights_proxy:1.5::el9
Vendors & Products Redhat insights Proxy
References

Wed, 30 Jul 2025 09:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:rhel_e4s:9.0::appstream
cpe:/o:redhat:rhel_e4s:9.0::baseos
References

Tue, 29 Jul 2025 13:15:00 +0000

Type Values Removed Values Added
References

Wed, 23 Jul 2025 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat openshift Distributed Tracing
CPEs cpe:/a:redhat:openshift_distributed_tracing:3.6::el8
Vendors & Products Redhat openshift Distributed Tracing
References

Thu, 17 Jul 2025 14:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel E4s
Redhat rhel Eus
CPEs cpe:/a:redhat:rhel_e4s:9.2::appstream
cpe:/a:redhat:rhel_eus:9.4::appstream
cpe:/a:redhat:rhel_eus:9.4::crb
cpe:/o:redhat:rhel_e4s:9.2::baseos
cpe:/o:redhat:rhel_eus:9.4::baseos
Vendors & Products Redhat rhel E4s
Redhat rhel Eus
References

Wed, 16 Jul 2025 19:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:8::crb
cpe:/o:redhat:enterprise_linux:8::baseos
References

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00055}

epss

{'score': 0.00058}


Tue, 15 Jul 2025 14:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:9::appstream
cpe:/a:redhat:enterprise_linux:9::crb
cpe:/o:redhat:enterprise_linux:9::baseos
References

Tue, 15 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00058}

epss

{'score': 0.00055}


Mon, 14 Jul 2025 14:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10.0
References

Sun, 13 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00056}

epss

{'score': 0.00058}


Thu, 29 May 2025 12:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10

Tue, 06 May 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 06 May 2025 15:00:00 +0000

Type Values Removed Values Added
Description No description is available for this CVE. A flaw was found in GLib, which is vulnerable to an integer overflow in the g_string_insert_unichar() function. When the position at which to insert the character is large, the position will overflow, leading to a buffer underwrite.
Title glib: Buffer Underflow on GLib through glib/gstring.c via function g_string_insert_unichar Glib: buffer underflow on glib through glib/gstring.c via function g_string_insert_unichar
First Time appeared Redhat
Redhat enterprise Linux
CPEs cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References

Tue, 06 May 2025 14:30:00 +0000

Type Values Removed Values Added
Description No description is available for this CVE.
Title glib: Buffer Underflow on GLib through glib/gstring.c via function g_string_insert_unichar
Weaknesses CWE-124
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L'}

threat_severity

Moderate


Subscriptions

Redhat Enterprise Linux Insights Proxy Openshift Distributed Tracing Rhel Aus Rhel E4s Rhel Eus Rhel Eus Long Life Rhel Tus
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-01-29T19:05:58.921Z

Reserved: 2025-05-06T00:35:29.069Z

Link: CVE-2025-4373

cve-icon Vulnrichment

Updated: 2025-05-06T15:09:37.975Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-05-06T15:16:05.320

Modified: 2025-09-02T03:15:41.650

Link: CVE-2025-4373

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-05-06T00:00:00Z

Links: CVE-2025-4373 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses