How severe is CVE-2020-11547?

CVE-2020-11547 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2020-11547 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 52% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11547?

CVE-2020-11547 affects Paessler Prtg Network Monitor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-11547?

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

When was CVE-2020-11547 published?

CVE-2020-11547 was published on 2020-04-05 and last updated on 2026-06-17.

CVE-2020-11547

CVE-2020-11547 is a medium-severity vulnerability in Paessler Prtg Network Monitor with a CVSS 3.x base score of 5.3. Its EPSS exploit-prediction score of 52% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-306.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 52% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Paessler Prtg Network Monitor
Published: 2020-04-05
Last modified: 2026-06-17

Description

PRTG Network Monitor before 20.1.57.1745 allows remote unauthenticated attackers to obtain information about probes running or the server itself (CPU usage, memory, Windows version, and internal statistics) via an HTTP request, as demonstrated by type=probes to login.htm or index.htm.

Frequently asked questions

What is CVE-2020-11547?: PRTG Network Monitor before 20.1.57.1745 allows remote unauthenticated attackers to obtain information about probes running or the server itself (CPU usage, memory, Windows version, and internal statistics) via an HTTP request, as demonstrated by type=probes to login.htm or index.htm.
How severe is CVE-2020-11547?: CVE-2020-11547 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2020-11547 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 52% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11547?: CVE-2020-11547 affects Paessler Prtg Network Monitor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-11547?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-11547 published?: CVE-2020-11547 was published on 2020-04-05 and last updated on 2026-06-17.

References

https://github.com/ch-rigu/PRTG-Network-Monitor-Information-Disclosure

Affected products (1)

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

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