CVE-2025-67835: Paessler PRTG Network Monitor before 25.4.114 allows Denial-of-Service (DoS) by an authenticated attacker via

Q: How do I fix CVE-2025-67835?

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

Q: Is CVE-2025-67835 being exploited?

CVE-2025-67835 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-2025-67835 affect?

CVE-2025-67835 affects prtg network monitor. Severity is medium (CVSS 6.5). Paessler PRTG Network Monitor before 25.4.114 allows Denial-of-Service (DoS) by an authenticated attacker via the Notification Contacts functionality.

Q: How urgent is CVE-2025-67835?

Priority 32/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2025-67835 is a medium-severity flaw (CVSS 6.5) 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 Denial-of-Service (DoS) by an authenticated attacker via the Notification Contacts functionality.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-400
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-2025-67835?

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

Is CVE-2025-67835 being exploited?

CVE-2025-67835 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-2025-67835 affect?

CVE-2025-67835 affects prtg network monitor. Severity is medium (CVSS 6.5). Paessler PRTG Network Monitor before 25.4.114 allows Denial-of-Service (DoS) by an authenticated attacker via the Notification Contacts functionality.

How urgent is CVE-2025-67835?

Priority 32/100. No elevated risk signals yet.

Related CVEs

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
CVE-2023-51630 MEDIUM 6.1 UPGRADE Paessler PRTG Network Monitor Cross-Site Scripting Authentication Bypass Vulnerability

References

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