GHSA-cfv9-2rgf-f55c · Severity: medium — A flaw was found in GLib, which is vulnerable to an integer overflow in the...
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.
Conclusion & alert: CVE-2025-4373 is rated Moderate Risk (44.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.74%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-04-23 | 0.76% | 0.74% | -0.01% |
| 2 | 2026-04-21 | 0.74% | 0.76% | +0.01% |
| 3 | 2026-03-02 | — | 0.74% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.8 | 3.1 | MEDIUM |
|
2.2 | 2.5 | [email protected] |
GHSA-cfv9-2rgf-f55c · Severity: medium — A flaw was found in GLib, which is vulnerable to an integer overflow in the...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2025-4373 not yet assigned priority: Debian including 1 source packages (glib2.0), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2025-4373 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2025-4373 |
suse
|
medium | CVE-2025-4373 severity moderate: SUSE including 466 source package names (0.23.1-11.6:glib2-tools-2.78.6-150600.4.16.1, 0.23.1-11.6:libgio-2_0-0-2.78.6-150600.4.16.1, …), 1965 product×package rows across 340 product lines (Container bci/kiwi, Container bci/spack, … (340 product lines)): Fixed 1744, Known Affected 221. | https://www.suse.com/security/cve/CVE-2025-4373/ |
ubuntu
|
medium | CVE-2025-4373 medium priority: Ubuntu including 1 source packages (glib2.0), 10 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): released 6, needs-triage 3, not-affected 1. | https://ubuntu.com/security/CVE-2025-4373 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||