CVE-2023-53983: Anevia Flamingo XL/XS 3.6.20 contains a critical vulnerability with weak default administrative credentials th

This week

CRITICAL 9.8REMOTEMITIGATEMITIGATEDOWNGRADE

CVE-2023-53983 is a critical-severity flaw (CVSS 9.8) affecting flamingo xl firmware, flamingo xs firmware, soaplive. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Anevia Flamingo XL/XS 3.6.20 contains a critical vulnerability with weak default administrative credentials that can be easily guessed. Attackers can leverage these hard-coded credentials to gain full remote system control without complex authentication mechanisms.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-798
Published	2025-12-30
Last modified	2026-09-24

Publisher (CNA): VulnCheck · Vendor: ateme

Last updated 2026-09-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-30 23:15 UTCPublished CVE record published
2026-09-24 23:10 UTCUpdated Record last modified

ateme flamingo xl firmware MITIGATE

Affected: 3.2.9 · 3.6.20

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.2.9

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

ateme flamingo xs firmware MITIGATE

Affected: 3.2.9 · 3.6.20

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.2.9

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

ateme soaplive DOWNGRADE

Affected: 2.0.3 · 2.4.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.0.3 (Debian / Ubuntu)

apt-cache madison soaplive sudo apt install soaplive=<VERSION_BEFORE_2.0.3> sudo apt-mark hold soaplive

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

dnf --showduplicates list soaplive sudo dnf downgrade soaplive-<VERSION_BEFORE_2.0.3> sudo dnf versionlock add soaplive

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.

ateme soapsystem DOWNGRADE

Affected: 1.3.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.3.1 (Debian / Ubuntu)

apt-cache madison soapsystem sudo apt install soapsystem=<VERSION_BEFORE_1.3.1> sudo apt-mark hold soapsystem

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

dnf --showduplicates list soapsystem sudo dnf downgrade soapsystem-<VERSION_BEFORE_1.3.1> sudo dnf versionlock add soapsystem

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.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · amule · FIXED · 3.2.0-1.fc46 · FEDORA-2026-4feb2647b0 · source

sudo dnf upgrade --advisory=FEDORA-2026-4feb2647b0

Fedora ELN · pcp · FIXED · 7.2.2-3.eln159 · FEDORA-2026-74e63af29f · source

sudo dnf upgrade --advisory=FEDORA-2026-74e63af29f

Public exploits and detection

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

Write-up: www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5777.php

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-2023-53983?

flamingo xl firmware: mitigate or apply the listed mitigation; flamingo xs firmware: mitigate or apply the listed mitigation; soaplive: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-53983 being exploited?

CVE-2023-53983 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-2023-53983 affect?

CVE-2023-53983 affects flamingo xl firmware, flamingo xs firmware, soaplive. Severity is critical (CVSS 9.8). Anevia Flamingo XL/XS 3.6.20 contains a critical vulnerability with weak default administrative credentials that can be easily guessed. Attackers can leverage these hard-coded credentials to gain full remote system control without complex a

How urgent is CVE-2023-53983?

Priority 60/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-58338 CRITICAL 10.0 MITIGATE Anevia Flamingo XL 3.2.9 contains a restricted shell vulnerability that allows remote attackers to escape the

References

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