How severe is CVE-2025-4802?

CVE-2025-4802 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-4802 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-2025-4802?

CVE-2025-4802 affects Gnu Glibc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-4802?

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-2025-4802 have an EU (EUVD) identifier?

Yes. CVE-2025-4802 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15553.

When was CVE-2025-4802 published?

CVE-2025-4802 was published on 2025-05-16 and last updated on 2026-06-17.

CVE-2025-4802

CVE-2025-4802 is a high-severity vulnerability in Gnu Glibc with a CVSS 3.x base score of 7.8. 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-426.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-15553
Weakness: CWE-426
Affected product: Gnu Glibc
Published: 2025-05-16
Last modified: 2026-06-17

Description

Untrusted LD_LIBRARY_PATH environment variable vulnerability in the GNU C Library version 2.27 to 2.38 allows attacker controlled loading of dynamically shared library in statically compiled setuid binaries that call dlopen (including internal dlopen calls after setlocale or calls to NSS functions such as getaddrinfo).

Frequently asked questions

What is CVE-2025-4802?: Untrusted LD_LIBRARY_PATH environment variable vulnerability in the GNU C Library version 2.27 to 2.38 allows attacker controlled loading of dynamically shared library in statically compiled setuid binaries that call dlopen (including internal dlopen calls after setlocale or calls to NSS functions such as getaddrinfo).
How severe is CVE-2025-4802?: CVE-2025-4802 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-4802 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-2025-4802?: CVE-2025-4802 affects Gnu Glibc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-4802?: 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-2025-4802 have an EU (EUVD) identifier?: Yes. CVE-2025-4802 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15553.
When was CVE-2025-4802 published?: CVE-2025-4802 was published on 2025-05-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*

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