CVE-2026-35227
Last modified
CVE-2026-35227 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. An unauthenticated remote attacker may exhaust all available TCP connections in the CODESYS Modbus TCP Server stack if a race condition in connection handling is successfully exploited, preventing legitimate clients from establishing new connections.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.
Description
An unauthenticated remote attacker may exhaust all available TCP connections in the CODESYS Modbus TCP Server stack if a race condition in connection handling is successfully exploited, preventing legitimate clients from establishing new connections.
Metrics
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| CODESYS | CODESYS Modbus | >= 1.0.0.0, < 4.6.0.0 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-35227?
How severe is CVE-2026-35227?
How do I fix CVE-2026-35227?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-35220Lack of CSRF token validation lead to a CSRF attack vector i…4.3
- CVE-2026-35221Improperly built filter clauses lead to a SQL injection vuln…9.8
- CVE-2026-35222Improperly validated order clauses lead to a SQL injection v…9.8
- CVE-2026-35223An improper access check allows unauthorized access to com_c…9.8
- CVE-2026-35225An unauthenticated remote attacker is able to exhaust all av…8.7
- CVE-2026-35226An out‑of‑bounds write vulnerability in the CODESYS PROFINET…7.1
- CVE-2026-35228Vulnerability in the Oracle MCP Server Helper Tool product o…8.7
- CVE-2026-35229Vulnerability in the Java VM component of Oracle Database Se…7.5
- CVE-2026-3523The Apocalypse Meow plugin for WordPress is vulnerable to SQ…4.9
- CVE-2026-35230Vulnerability in the Oracle VM VirtualBox product of Oracle …7.5
- CVE-2026-35231Vulnerability in the Oracle Financial Services Transaction F…7.5
- CVE-2026-35232Vulnerability in Oracle Fusion Middleware (component: Dynami…5.4
Are you affected by CVE-2026-35227?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST