How severe is CVE-2025-67833?

CVE-2025-67833 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-67833 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-67833?

CVE-2025-67833 affects Paessler Prtg Network Monitor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-67833?

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

Does CVE-2025-67833 have an EU (EUVD) identifier?

Yes. CVE-2025-67833 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2435.

When was CVE-2025-67833 published?

CVE-2025-67833 was published on 2026-01-14 and last updated on 2026-06-17.

CVE-2025-67833

CVE-2025-67833 is a medium-severity vulnerability in Paessler Prtg Network Monitor with a CVSS 3.x base score of 6.1. 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 6.1)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2435
Weakness: CWE-79
Affected product: Paessler Prtg Network Monitor
Published: 2026-01-14
Last modified: 2026-06-17

Description

Paessler PRTG Network Monitor before 25.4.114 allows XSS by an unauthenticated attacker via the tag parameter.

Frequently asked questions

What is CVE-2025-67833?: Paessler PRTG Network Monitor before 25.4.114 allows XSS by an unauthenticated attacker via the tag parameter.
How severe is CVE-2025-67833?: CVE-2025-67833 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-67833 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-67833?: CVE-2025-67833 affects Paessler Prtg Network Monitor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-67833?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-67833 have an EU (EUVD) identifier?: Yes. CVE-2025-67833 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2435.
When was CVE-2025-67833 published?: CVE-2025-67833 was published on 2026-01-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:paessler:prtg_network_monitor:*:*:*:*:*:*:*:*

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