How severe is CVE-2025-34178?

CVE-2025-34178 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-34178 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-34178?

CVE-2025-34178 affects Pfsense. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-34178?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-34178 have an EU (EUVD) identifier?

Yes. CVE-2025-34178 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29753.

When was CVE-2025-34178 published?

CVE-2025-34178 was published on 2025-09-09 and last updated on 2026-06-17.

CVE-2025-34178

CVE-2025-34178 is a medium-severity vulnerability in Pfsense with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 5.1
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-29753
Weakness: CWE-79
Affected product: Pfsense
Published: 2025-09-09
Last modified: 2026-06-17

Description

In pfSense CE /suricata/suricata_app_parsers.php, the value of the policy_name parameter is not sanitized of HTML-related strings/characters before being directly displayed. This can result in stored cross-site scripting. The attacker must be authenticated with at least "WebCfg - Services: suricata package" permissions.

Frequently asked questions

What is CVE-2025-34178?: In pfSense CE /suricata/suricata_app_parsers.php, the value of the policy_name parameter is not sanitized of HTML-related strings/characters before being directly displayed. This can result in stored cross-site scripting. The attacker must be authenticated with at least "WebCfg - Services: suricata package" permissions.
How severe is CVE-2025-34178?: CVE-2025-34178 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-34178 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-34178?: CVE-2025-34178 affects Pfsense. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-34178?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-34178 have an EU (EUVD) identifier?: Yes. CVE-2025-34178 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29753.
When was CVE-2025-34178 published?: CVE-2025-34178 was published on 2025-09-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pfsense:pfsense:*:*:*:*:community:*:*:*

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