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.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Redhat
  • Enterprise Linux
  • Insights Proxy
  • Openshift Distributed Tracing
  • Rhel Aus
  • Rhel E4s
  • Rhel Eus
  • Rhel Eus Long Life
  • Rhel Tus

No data.

No data.

References
Link Providers
https://access.redhat.com/errata/RHSA-2025:10855 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:11140 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:11327 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:11373 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:11374 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:11662 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:12275 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:13335 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:14988 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:14989 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:14990 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2025:14991 cve-icon cve-icon
https://access.redhat.com/security/cve/CVE-2025-4373 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2364265 cve-icon cve-icon
https://gitlab.gnome.org/GNOME/glib/-/issues/3677 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-4373 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-4373 cve-icon
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
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2025-05-06T14:48:39.264Z

Updated: 2025-10-08T16:01:12.220Z

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