How severe is CVE-2026-0915?

CVE-2026-0915 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 high, integrity none, and availability none.

Is CVE-2026-0915 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-0915?

CVE-2026-0915 affects Gnu Glibc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-0915?

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-2026-0915 have an EU (EUVD) identifier?

Yes. CVE-2026-0915 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2855.

When was CVE-2026-0915 published?

CVE-2026-0915 was published on 2026-01-15 and last updated on 2026-06-17.

CVE-2026-0915

CVE-2026-0915 is a high-severity vulnerability in Gnu Glibc 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-908.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2855
Weakness: CWE-908
Affected product: Gnu Glibc
Published: 2026-01-15
Last modified: 2026-06-17

Description

Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver.

Frequently asked questions

What is CVE-2026-0915?: Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver.
How severe is CVE-2026-0915?: CVE-2026-0915 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 high, integrity none, and availability none.
Is CVE-2026-0915 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-0915?: CVE-2026-0915 affects Gnu Glibc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-0915?: 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-2026-0915 have an EU (EUVD) identifier?: Yes. CVE-2026-0915 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2855.
When was CVE-2026-0915 published?: CVE-2026-0915 was published on 2026-01-15 and last updated on 2026-06-17.

References

Affected products (1)

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

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