CVE-2025-2233: Samsung SmartThings Improper Verification of Cryptographic Signature Authentication Bypass Vulnerability

Q: How do I fix CVE-2025-2233?

smartthings: upgrade to 0.55.5. Exact commands for each OS are on this page.

Q: Is CVE-2025-2233 being exploited?

CVE-2025-2233 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-2025-2233 affect?

CVE-2025-2233 affects smartthings. Severity is high (CVSS 8.8). Samsung SmartThings Improper Verification of Cryptographic Signature Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Samsung SmartThings. Authen

This month

HIGH 8.8UPGRADE

CVE-2025-2233 is a high-severity flaw (CVSS 8.8) affecting smartthings. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Samsung SmartThings Improper Verification of Cryptographic Signature Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Samsung SmartThings. Authentication is not required to exploit this vulnerability. The specific flaw exists within the Hub Local API service, which listens on TCP port 8766 by default. The issue results from the lack of proper verificat

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-347
Published	2025-03-11
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: samsung

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

Am I affected?

Timeline

2025-03-11 23:15 UTCPublished CVE record published
2026-06-17 09:06 UTCUpdated Record last modified

samsung smartthings UPGRADE

Affected: < 0.55.5

Fixed in: 0.55.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.55.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade smartthings

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade smartthings

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-2025-2233?

smartthings: upgrade to 0.55.5. Exact commands for each OS are on this page.

Is CVE-2025-2233 being exploited?

CVE-2025-2233 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-2025-2233 affect?

CVE-2025-2233 affects smartthings. Severity is high (CVSS 8.8). Samsung SmartThings Improper Verification of Cryptographic Signature Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Samsung SmartThings. Authen

How urgent is CVE-2025-2233?

Priority 45/100. High severity

Software pages

Samsung vulnerabilities

Related CVEs

CVE-2024-49416 MEDIUM 4.0 UPGRADE Use of implicit intent for sensitive communication in SmartThings prior to version 1.8.21 allows local attacke
CVE-2024-34596 MEDIUM 5.9 UPGRADE Improper authentication in SmartThings prior to version 1.8.17 allows remote attackers to bypass the expiratio

References

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