CVE-2025-3983: A vulnerability has been found in AMTT Hotel Broadband Operation System 1.0 and classified as critical

This week

MEDIUM 4.7DOWNGRADE

CVE-2025-3983 is a medium-severity flaw (CVSS 4.7) affecting hibos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been found in AMTT Hotel Broadband Operation System 1.0 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /manager/system/nlog_down.php. The manipulation of the argument ProtocolType leads to command injection. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. Other parameters might be affected as well. The vendor was contacted ea

Why this priority

EPSS top 3%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	4.7 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	17.9% (top 3%)
CISA exploited list	No
Weakness	CWE-74, CWE-77
Published	2025-04-27
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: amttgroup

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

Am I affected?

Timeline

2025-04-27 20:15 UTCPublished CVE record published
2026-06-17 09:21 UTCUpdated Record last modified

amttgroup hibos DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison hibos sudo apt install hibos=<VERSION_BEFORE_1.0> sudo apt-mark hold hibos

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

dnf --showduplicates list hibos sudo dnf downgrade hibos-<VERSION_BEFORE_1.0> sudo dnf versionlock add hibos

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.

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-2025-3983?

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

Is CVE-2025-3983 being exploited?

CVE-2025-3983 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-2025-3983 affect?

CVE-2025-3983 affects hibos. Severity is medium (CVSS 4.7). A vulnerability has been found in AMTT Hotel Broadband Operation System 1.0 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /manager/system/nlog_down.php. The manipulation of the argument P

How urgent is CVE-2025-3983?

Priority 46/100. EPSS top 3%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-13123 MEDIUM 6.3 DOWNGRADE A flaw has been found in AMTT Hotel Broadband Operation System 1.0
CVE-2025-14090 MEDIUM 4.7 DOWNGRADE A security flaw has been discovered in AMTT Hotel Broadband Operation System 1.0
CVE-2025-12253 HIGH 7.3 DOWNGRADE A vulnerability was determined in AMTT Hotel Broadband Operation System 1.0
CVE-2025-2701 MEDIUM 6.3 DOWNGRADE A vulnerability classified as critical was found in AMTT Hotel Broadband Operation System 1.0
CVE-2024-41476 CRITICAL 9.8 UPGRADE AMTT Hotel Broadband Operation System (HiBOS) V3.0.3.151204 and before is vulnerable to SQL Injection via /man

References

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