CVE-2023-51630: Paessler PRTG Network Monitor Cross-Site Scripting Authentication Bypass Vulnerability

Q: How do I fix CVE-2023-51630?

prtg network monitor: upgrade to 24.1.90.1306. Exact commands for each OS are on this page.

Q: Is CVE-2023-51630 being exploited?

CVE-2023-51630 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-51630 affect?

CVE-2023-51630 affects prtg network monitor. Severity is medium (CVSS 6.1). Paessler PRTG Network Monitor Cross-Site Scripting Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Paessler PRTG Network Monitor. User interaction is requ

Q: How urgent is CVE-2023-51630?

Priority 41/100. No elevated risk signals yet.

This month

MEDIUM 6.1UPGRADE

CVE-2023-51630 is a medium-severity flaw (CVSS 6.1) affecting prtg network monitor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Paessler PRTG Network Monitor Cross-Site Scripting Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Paessler PRTG Network Monitor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the web console. The issue results from the lack of proper validation

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.7% (top 22%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-02-08
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: paessler

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-02-08 23:15 UTCPublished CVE record published
2026-06-17 06:41 UTCUpdated Record last modified

paessler prtg network monitor UPGRADE

Affected: < 24.1.90.1306

Fixed in: 24.1.90.1306

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy prtg-network-monitor || rpm -q prtg-network-monitor || prtg-network-monitor --version

2. UPGRADE to 24.1.90.1306 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade prtg-network-monitor

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade prtg-network-monitor

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-51630?

prtg network monitor: upgrade to 24.1.90.1306. Exact commands for each OS are on this page.

Is CVE-2023-51630 being exploited?

CVE-2023-51630 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-51630 affect?

CVE-2023-51630 affects prtg network monitor. Severity is medium (CVSS 6.1). Paessler PRTG Network Monitor Cross-Site Scripting Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Paessler PRTG Network Monitor. User interaction is requ

How urgent is CVE-2023-51630?

Priority 41/100. No elevated risk signals yet.

Related CVEs

CVE-2025-67835 MEDIUM 6.5 UPGRADE Paessler PRTG Network Monitor before 25.4.114 allows Denial-of-Service (DoS) by an authenticated attacker via
CVE-2025-67834 MEDIUM 5.4 UPGRADE Paessler PRTG Network Monitor before 25.4.114 allows XSS by an unauthenticated attacker via the filter paramet
CVE-2025-67833 MEDIUM 6.1 UPGRADE Paessler PRTG Network Monitor before 25.4.114 allows XSS by an unauthenticated attacker via the tag parameter.
CVE-2024-12833 MEDIUM 6.1 UPGRADE Paessler PRTG Network Monitor SNMP Cross-Site Scripting Authentication Bypass Vulnerability

References

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