CVE-2025-67834: Paessler PRTG Network Monitor before 25.4.114 allows XSS by an unauthenticated attacker via the filter paramet

Q: How do I fix CVE-2025-67834?

prtg network monitor: upgrade to 25.4.114.1032. Exact commands for each OS are on this page.

Q: Is CVE-2025-67834 being exploited?

CVE-2025-67834 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-2025-67834 affect?

CVE-2025-67834 affects prtg network monitor. Severity is medium (CVSS 5.4). Paessler PRTG Network Monitor before 25.4.114 allows XSS by an unauthenticated attacker via the filter parameter.

Q: How urgent is CVE-2025-67834?

Priority 24/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2025-67834 is a medium-severity flaw (CVSS 5.4) 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 before 25.4.114 allows XSS by an unauthenticated attacker via the filter parameter.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 81%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-01-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: paessler

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

Am I affected?

Timeline

2026-01-14 17:16 UTCPublished CVE record published
2026-06-17 09:58 UTCUpdated Record last modified

paessler prtg network monitor UPGRADE

Affected: < 25.4.114.1032

Fixed in: 25.4.114.1032

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 25.4.114.1032 (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-2025-67834?

prtg network monitor: upgrade to 25.4.114.1032. Exact commands for each OS are on this page.

Is CVE-2025-67834 being exploited?

CVE-2025-67834 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-2025-67834 affect?

CVE-2025-67834 affects prtg network monitor. Severity is medium (CVSS 5.4). Paessler PRTG Network Monitor before 25.4.114 allows XSS by an unauthenticated attacker via the filter parameter.

How urgent is CVE-2025-67834?

Priority 24/100. 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-2025-67833 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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