How severe is CVE-2025-4056?

CVE-2025-4056 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-4056 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-4056?

CVE-2025-4056 affects Gnome Glib. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-4056?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-4056 have an EU (EUVD) identifier?

Yes. CVE-2025-4056 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22903.

When was CVE-2025-4056 published?

CVE-2025-4056 was published on 2025-07-28 and last updated on 2026-06-30.

CVE-2025-4056

CVE-2025-4056 is a high-severity vulnerability in Gnome Glib with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-22903
Weakness: CWE-94
Affected product: Gnome Glib
Published: 2025-07-28
Last modified: 2026-06-30

Description

A flaw was found in GLib. A denial of service on Windows platforms may occur if an application attempts to spawn a program using long command lines.

Frequently asked questions

What is CVE-2025-4056?: A flaw was found in GLib. A denial of service on Windows platforms may occur if an application attempts to spawn a program using long command lines.
How severe is CVE-2025-4056?: CVE-2025-4056 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-4056 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-4056?: CVE-2025-4056 affects Gnome Glib. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-4056?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-4056 have an EU (EUVD) identifier?: Yes. CVE-2025-4056 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22903.
When was CVE-2025-4056 published?: CVE-2025-4056 was published on 2025-07-28 and last updated on 2026-06-30.

References

Affected products (1)

cpe:2.3:a:gnome:glib:*:*:*:*:*:*:*:*

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