How severe is CVE-2025-34087?

CVE-2025-34087 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-34087 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-34087?

CVE-2025-34087 affects Pi-hole. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-34087?

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-2025-34087 have an EU (EUVD) identifier?

Yes. CVE-2025-34087 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19902.

When was CVE-2025-34087 published?

CVE-2025-34087 was published on 2025-07-03 and last updated on 2026-06-17.

CVE-2025-34087

CVE-2025-34087 is a high-severity vulnerability in Pi-hole with a CVSS 3.x base score of 8.8. 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-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 9.0
EPSS exploit prediction: 5% (92nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-19902
Weakness: CWE-78
Affected product: Pi-hole
Published: 2025-07-03
Last modified: 2026-06-17

Description

An authenticated command injection vulnerability exists in Pi-hole versions up to 3.3. When adding a domain to the allowlist via the web interface, the domain parameter is not properly sanitized, allowing an attacker to append OS commands to the domain string. These commands are executed on the underlying operating system with the privileges of the Pi-hole service user. This behavior was present in the legacy AdminLTE interface and has since been patched in later versions.

Frequently asked questions

What is CVE-2025-34087?: An authenticated command injection vulnerability exists in Pi-hole versions up to 3.3. When adding a domain to the allowlist via the web interface, the domain parameter is not properly sanitized, allowing an attacker to append OS commands to the domain string. These commands are executed on the underlying operating system with the privileges of the Pi-hole service user. This behavior was present in the legacy AdminLTE interface and has since been patched in later versions.
How severe is CVE-2025-34087?: CVE-2025-34087 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-34087 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-34087?: CVE-2025-34087 affects Pi-hole. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-34087?: 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-2025-34087 have an EU (EUVD) identifier?: Yes. CVE-2025-34087 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19902.
When was CVE-2025-34087 published?: CVE-2025-34087 was published on 2025-07-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pi-hole:pi-hole:*:*:*:*:*:*:*:*

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