How severe is CVE-2021-34547?

CVE-2021-34547 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-34547 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34547?

CVE-2021-34547 affects Paessler Prtg Network Monitor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-34547?

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

When was CVE-2021-34547 published?

CVE-2021-34547 was published on 2021-06-10 and last updated on 2026-06-17.

CVE-2021-34547

CVE-2021-34547 is a medium-severity vulnerability in Paessler Prtg Network Monitor with a CVSS 3.x base score of 4.3. 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-352.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.3
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Paessler Prtg Network Monitor
Published: 2021-06-10
Last modified: 2026-06-17

Description

PRTG Network Monitor 20.1.55.1775 allows /editsettings CSRF for user account creation.

Frequently asked questions

What is CVE-2021-34547?: PRTG Network Monitor 20.1.55.1775 allows /editsettings CSRF for user account creation.
How severe is CVE-2021-34547?: CVE-2021-34547 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-34547 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34547?: CVE-2021-34547 affects Paessler Prtg Network Monitor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-34547?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-34547 published?: CVE-2021-34547 was published on 2021-06-10 and last updated on 2026-06-17.

References

https://github.com/likhihcv/PRTG_Network_Monitor_20.1.55.1775_CSRF

Affected products (1)

cpe:2.3:a:paessler:prtg_network_monitor:20.1.55.1775:*:*:*:*:*:*:*

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