Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of…
Priority MEDIUM 54CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via a crafted request to UDP port 48899, which triggers an out-of-bounds read.
Why it matters now
EPSS 0.4965 98th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:beckhoff:twincat:*:*:*:*:*:*:*:* | up to 2.11.0.2004 | Vulnerable | Beckhoff |
| cpe:2.3:a:beckhoff:twincat:2.7:*:*:*:*:*:*:* | 2.7 | Vulnerable | Beckhoff |
| cpe:2.3:a:beckhoff:twincat:2.8:*:*:*:*:*:*:* | 2.8 | Vulnerable | Beckhoff |
| cpe:2.3:a:beckhoff:twincat:2.9:*:*:*:*:*:*:* | 2.9 | Vulnerable | Beckhoff |
| cpe:2.3:a:beckhoff:twincat:2.10:*:*:*:*:*:*:* | 2.10 | Vulnerable | Beckhoff |
- cpe:2.3:a:beckhoff:twincat:*:*:*:*:*:*:*:* Versions up to 2.11.0.2004 Vulnerable ·Beckhoff
- cpe:2.3:a:beckhoff:twincat:2.7:*:*:*:*:*:*:* Versions 2.7 Vulnerable ·Beckhoff
- cpe:2.3:a:beckhoff:twincat:2.8:*:*:*:*:*:*:* Versions 2.8 Vulnerable ·Beckhoff
- cpe:2.3:a:beckhoff:twincat:2.9:*:*:*:*:*:*:* Versions 2.9 Vulnerable ·Beckhoff
- cpe:2.3:a:beckhoff:twincat:2.10:*:*:*:*:*:*:* Versions 2.10 Vulnerable ·Beckhoff
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2011-3486
- 2026-10-03 Alias added: GHSA-74h6-2hgj-rvpx
References
More Beckhoff Twincat vulnerabilities
- TI-2019-12580 Beckhoff Embedded Windows PLCs through 3.1.4024.0, and Beckhoff Twincat on Windows… CVSS 3.1CRITICAL 9.8
- TI-2014-04414 Beckhoff Embedded PC Images and TwinCAT Components Improper Restriction of Excessive Authentication Attempts CVSS 3.1CRITICAL 9.1
- TI-2014-04415 Beckhoff Embedded PC Images and TwinCAT Components Exposed Dangerous Method or Function CVSS 3.1CRITICAL 9.1
- TI-2017-12294 Improper authorization in ICS-CERT Beckhoff TwinCAT CVSS 3.0CRITICAL 9.1
- TI-2019-04001 Beckhoff TwinCAT Profinet Driver Divide-by-Zero Denial of Service CVSS 3.1HIGH 7.5
- TI-2019-04000 Beckhoff TwinCAT Discovery Service Denial of Service CVSS 3.1HIGH 7.5
Sources
- CVE-2011-3486 · CVE Program
- CVE-2011-3486 · NVD
- FIRST EPSS
- GHSA-74h6-2hgj-rvpx · GitHub Advisory Database · CC BY 4.0
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