MEDIUM 6.5 Microsoft

CVE-2025-4373

Glib: buffer underflow on glib through glib/gstring.c via function g_string_insert_unichar

Microsoft Security Update 2025-May: Glib: buffer underflow on glib through glib/gstring.c via function g_string_insert_unichar

Affected Products

cbl2 glib 2.71.0-5 on CBL Mariner 2.0
cbl2 glib 2.71.0-7 on CBL Mariner 2.0
cbl2 glib 2.71.0-6 on CBL Mariner 2.0
azl3 glib 2.78.6-3 on Azure Linux 3.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-4373
https://nvd.nist.gov/vuln/detail/CVE-2025-4373

Published: 2025-05-13 · Source: Microsoft · Feed updated: 2026-08-04

This medium severity vulnerability with a CVSS score of 6.5 was published on 2025-05-13 via Microsoft. Affected: cbl2 glib 2.71.0-5 on CBL Mariner 2.0, cbl2 glib 2.71.0-7 on CBL Mariner 2.0, cbl2 glib 2.71.0-6 on CBL Mariner 2.0 and 1 more.

vulnfeed aggregates 9166 vulnerabilities from NVD, CISA KEV, Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.