CVE-2025-54322: Xspeeder SXZOS through 2025-12-26 allows root remote code execution via base64-encoded Python code in the chki

Q: How do I fix CVE-2025-54322?

sxzos: upgrade to newer than 2025-12-26. Exact commands for each OS are on this page.

Q: Is CVE-2025-54322 being exploited?

CVE-2025-54322 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-2025-54322 affect?

CVE-2025-54322 affects sxzos. Severity is critical (CVSS 10.0). Xspeeder SXZOS through 2025-12-26 allows root remote code execution via base64-encoded Python code in the chkid parameter to vLogin.py. The title and oIP parameters are also used.

Q: How urgent is CVE-2025-54322?

Priority 72/100. Critical severity; EPSS top 3%: very likely to be exploited; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This week

CRITICAL 10.0REMOTEUPGRADE

CVE-2025-54322 is a critical-severity flaw (CVSS 10.0) affecting sxzos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Xspeeder SXZOS through 2025-12-26 allows root remote code execution via base64-encoded Python code in the chkid parameter to vLogin.py. The title and oIP parameters are also used.

Why this priority

Critical severity
EPSS top 3%: very likely to be exploited
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	10.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	15.1% (top 3%)
CISA exploited list	No
Weakness	CWE-95, CWE-94
Published	2025-12-27
Last modified	2026-10-07

Publisher (CNA): MITRE · Vendor: xspeeder

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-27 14:15 UTCPublished CVE record published
2026-10-07 13:10 UTCUpdated Record last modified

xspeeder sxzos UPGRADE

Affected: <= 2025-12-26

Fixed in: newer than 2025-12-26

Safe to downgrade to: no unaffected older release

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.

Exact fixes by distribution

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

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

Fedora ELN · mysql9.7 · FIXED · 9.7.4-3.eln159 · FEDORA-2026-ea1c50e49b · source

sudo dnf upgrade --advisory=FEDORA-2026-ea1c50e49b

Public exploits and detection

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

GitHub PoC: Sachinart/CVE-2025-54322 (8 stars)
GitHub PoC: nkuty/CVE-2025-54322-exploit (2 stars)
Write-up: pwn.ai/blog/cve-2025-54322-zeroday-unauthenticated-root-rce-affecting-70-000-hosts

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-2025-54322?

sxzos: upgrade to newer than 2025-12-26. Exact commands for each OS are on this page.

Is CVE-2025-54322 being exploited?

CVE-2025-54322 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-2025-54322 affect?

CVE-2025-54322 affects sxzos. Severity is critical (CVSS 10.0). Xspeeder SXZOS through 2025-12-26 allows root remote code execution via base64-encoded Python code in the chkid parameter to vLogin.py. The title and oIP parameters are also used.

How urgent is CVE-2025-54322?

Priority 72/100. Critical severity; EPSS top 3%: very likely to be exploited; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

Python vulnerabilities

References

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