Stack-based buffer overflow in the CmpWebServer component in 3S CoDeSys 3.4 SP4 Patch 2…
Priority HIGH 81CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Complete · Complete · Complete
- 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
Stack-based buffer overflow in the CmpWebServer component in 3S CoDeSys 3.4 SP4 Patch 2 and earlier, as used on the ABB AC500 PLC and possibly other products, allows remote attackers to execute arbitrary code via a long URI to TCP port 8080.
Why it matters now
EPSS 0.72714 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and 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 · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:3ssoftware:codesys:*:sp4:*:*:*:*:*:* | up to 3.4 | Vulnerable | 3ssoftware |
- cpe:2.3:a:3ssoftware:codesys:*:sp4:*:*:*:*:*:* Versions up to 3.4 Vulnerable ·3ssoftware
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2011-5007
- 2026-10-03 Alias added: GHSA-p96c-w9qf-8j98
References
Exploit 1
Other 6
More 3ssoftware Codesys vulnerabilities
- TI-2011-04290 Integer overflow in the GatewayService component in 3S CoDeSys 3.4 SP4 Patch 2 allows… CVSS 2.0HIGH 7.5
- TI-2011-04291 The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows… CVSS 2.0MEDIUM 5.0
- TI-2011-04335 The CmbWebserver.dll module of the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows… CVSS 2.0MEDIUM 6.4
Sources
- CVE-2011-5007 · CVE Program
- CVE-2011-5007 · NVD
- FIRST EPSS
- GHSA-p96c-w9qf-8j98 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences