CVE-2011-5007

Exp

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.

Published: 2011-12-25 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-5007 is rated High Exploit Risk (90/100): CVSS Critical severity, with high exploitation likelihood (EPSS 81.88%, 99th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2011-5007

EDB-ID Source Kind Published Link
18240 exploit_db edb 2011-12-13 Exploit-DB ↗
18187 exploit_db edb 2011-12-01 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2011-5007

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-10-21 81.58% 81.88% +0.31%
2 2025-08-25 80.84% 81.58% +0.73%
3 2025-05-31 — 80.84% —

Full EPSS history (26 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-5007

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2011-5007

Affected software / configurations for CVE-2011-5007

Vendor Product Version Raw CPE
3ssoftware codesys <= 3.4 cpe:2.3:a:3ssoftware:codesys:*:sp4:*:*:*:*:*:*

References for CVE-2011-5007

cvelogic Threat Intelligence