CVE-2025-4373

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

Score 4.8 from GitHub Security Advisory published 2025-05-06. NVD baseline CVSS 4.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.8Exploit: NoneExposed: 0

A fix is available — apply it.

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.

CVSS v3
4.8
EG Score
4.8(medium)
EPSS
37.5%
KEV
Not listed

Published

May 6, 2025

Last Modified

July 19, 2026

Advisory Details (9)

Auto-updated Jun 25, 2026
Patch available. Sources: redhat.
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Serv

https://access.redhat.com/errata/RHSA-2025:14989
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP So

https://access.redhat.com/errata/RHSA-2025:14988
redhat Patch Available
https://access.redhat.com/errata/RHSA-2025:13335
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2025:12275
redhat Patch Available
https://access.redhat.com/errata/RHSA-2025:11662
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.4 Extended Update Support.

https://access.redhat.com/errata/RHSA-2025:11374
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2025:11373
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2025:11327
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2025:11140

Vendor Advisories for CVE-2025-4373(13)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(13)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibglib2.0-tests (2.80.0-6ubuntu3.4) @ noble2026-05-21ubuntu
redhatglib2-0:2.56.4-158.el8_6.22025-09-02redhat
redhatglib2-0:2.56.4-162.el8_82025-09-02redhat
redhatglib2-0:2.56.4-10.el8_4.22025-09-02redhat
redhatglib2-0:2.56.4-8.el8_2.22025-09-02redhat
redhatinsights-proxy/insights-proxy-container-rhel9:1.5.5-17545043432025-08-07redhat
redhatglib2-0:2.68.4-5.el9_0.22025-07-30redhat
redhatrhosdt/jaeger-rhel8-operator:rhosdt-3.6-17532653142025-07-23redhat
redhatglib2-0:2.68.4-7.el9_2.22025-07-17redhat
redhatglib2-0:2.68.4-14.el9_4.32025-07-17redhat
redhatglib2-0:2.56.4-166.el8_102025-07-16redhat
redhatglib2-0:2.68.4-16.el9_6.22025-07-15redhat
redhatglib2-0:2.80.4-4.el10_0.62025-07-14redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 13× in last 7d / 49× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 127 total refreshes for this CVE.

  1. 2026-07-21 15:24 UTCEPSS rescore
  2. 2026-07-20 17:07 UTCEPSS rescore
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  20. 2026-07-10 13:41 UTCOSV refresh
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  1. 2026-07-06 16:27 UTCEPSS rescore
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  6. 2026-07-02 17:01 UTCEPSS rescore
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  8. 2026-06-30 23:22 UTCEPSS rescore
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  23. 2026-06-22 14:25 UTCEPSS rescore
  24. 2026-06-22 14:25 UTCEPSS rescore
  25. 2026-06-21 22:42 UTCOSV refresh
  26. 2026-06-21 14:56 UTCEPSS rescore
  27. 2026-06-21 14:56 UTCEPSS rescore
  28. 2026-06-21 01:59 UTCEPSS rescore
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  30. 2026-06-19 19:25 UTCEPSS rescore
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  44. 2026-06-10 22:18 UTCEPSS rescore
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  49. 2026-06-07 15:24 UTCEPSS rescore
  50. 2026-06-06 13:47 UTCEPSS rescore
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  58. 2026-06-03 09:10 UTCOSV refresh
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Frequently asked(5)

What is CVE-2025-4373?
CVE-2025-4373 is a medium vulnerability published on May 6, 2025. A flaw was found in GLib, which is vulnerable to an integer overflow in the gstringinsert_unichar() function. When the position at which to insert the character is large, the position will overflow, leading to a buffer underwrite.
When was CVE-2025-4373 disclosed?
CVE-2025-4373 was first published in the National Vulnerability Database on May 6, 2025, with the most recent update on July 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-4373 actively exploited?
CVE-2025-4373 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 37.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-4373?
CVE-2025-4373 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2025-4373?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-4373, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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