CVE-2025-44177: A directory traversal vulnerability was discovered in White Star Software Protop version 4.4.2-2024-11-27, spe

This week

HIGH 8.2REMOTEDOWNGRADE

CVE-2025-44177 is a high-severity flaw (CVSS 8.2) affecting protop. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A directory traversal vulnerability was discovered in White Star Software Protop version 4.4.2-2024-11-27, specifically in the /pt3upd/ endpoint. An unauthenticated attacker can remotely read arbitrary files on the underlying OS using encoded traversal sequences.

Why this priority

High severity
EPSS top 9%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	4.4% (top 9%)
CISA exploited list	No
Weakness	CWE-22
Published	2025-07-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: wss

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

Am I affected?

Timeline

2025-07-09 16:15 UTCPublished CVE record published
2026-06-17 09:25 UTCUpdated Record last modified

wss protop DOWNGRADE

Affected: 4.4.2-2024-11-27

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.4.2-2024-11-27

1. Check installed version

apt-cache policy protop || rpm -q protop || protop --version

2. No fixed release: DOWNGRADE to a release before 4.4.2-2024-11-27 (Debian / Ubuntu)

apt-cache madison protop sudo apt install protop=<VERSION_BEFORE_4.4.2-2024-11-27> sudo apt-mark hold protop

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list protop sudo dnf downgrade protop-<VERSION_BEFORE_4.4.2-2024-11-27> sudo dnf versionlock add protop

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: White Star Software Protop 4.4.2-2024-11-27 - Local File Inclusion (LFI)
Nuclei scan template: White Star Software ProTop - Directory Traversal

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-2025-44177?

protop: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-44177 being exploited?

CVE-2025-44177 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-2025-44177 affect?

CVE-2025-44177 affects protop. Severity is high (CVSS 8.2). A directory traversal vulnerability was discovered in White Star Software Protop version 4.4.2-2024-11-27, specifically in the /pt3upd/ endpoint. An unauthenticated attacker can remotely read arbitrary files on the underlying OS using encod

How urgent is CVE-2025-44177?

Priority 62/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

References

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