CVE-2025-29331: An issue in MHSanaei 3x-ui before v.2.5.3 and before allows a remote attacker to execute arbitrary code via th

Q: How do I fix CVE-2025-29331?

3x-ui: upgrade to 2.5.3. Exact commands for each OS are on this page.

Q: Is CVE-2025-29331 being exploited?

CVE-2025-29331 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-2025-29331 affect?

CVE-2025-29331 affects 3x-ui. Severity is critical (CVSS 9.8). An issue in MHSanaei 3x-ui before v.2.5.3 and before allows a remote attacker to execute arbitrary code via the management script x-ui passes the no check certificate option to wget when downloading updates

Q: How urgent is CVE-2025-29331?

Priority 54/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2025-29331 is a critical-severity flaw (CVSS 9.8) affecting 3x-ui. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue in MHSanaei 3x-ui before v.2.5.3 and before allows a remote attacker to execute arbitrary code via the management script x-ui passes the no check certificate option to wget when downloading updates

Why this priority

Critical severity
Public exploit reference
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	0.5% (top 61%)
CISA exploited list	No
Weakness	CWE-295
Published	2025-06-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mhsanaei

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

Am I affected?

Timeline

2025-06-26 15:15 UTCPublished CVE record published
2026-06-17 09:05 UTCUpdated Record last modified

mhsanaei 3x-ui UPGRADE

Affected: < 2.5.3

Fixed in: 2.5.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy 3x-ui || rpm -q 3x-ui || 3x-ui --version

2. UPGRADE to 2.5.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade 3x-ui

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade 3x-ui

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-2025-29331?

3x-ui: upgrade to 2.5.3. Exact commands for each OS are on this page.

Is CVE-2025-29331 being exploited?

CVE-2025-29331 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-2025-29331 affect?

CVE-2025-29331 affects 3x-ui. Severity is critical (CVSS 9.8). An issue in MHSanaei 3x-ui before v.2.5.3 and before allows a remote attacker to execute arbitrary code via the management script x-ui passes the no check certificate option to wget when downloading updates

How urgent is CVE-2025-29331?

Priority 54/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

← Back to latest CVEs