CVE-2011-3491

Exp

Heap-based buffer overflow in Progea Movicon / PowerHMI 11.2.1085 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a negative Content-Length field.

Published: 2011-09-16 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-3491 is rated High Exploit Risk (86.7/100): CVSS Critical severity, with high exploitation likelihood (EPSS 17.49%, 95th percentile). 2 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-2011-3491

EDB-ID Source Kind Published Link
17842 exploit_db edb 2011-09-14 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2011-3491

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 2026-05-26 19.13% 17.49% -1.64%
2 2026-01-03 20.56% 19.13% -1.43%
3 2025-10-21 — 20.56% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-3491

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-2011-3491

Affected software / configurations for CVE-2011-3491

Vendor Product Version Raw CPE
progea movicon_powerhmi <= 11.2.1085 cpe:2.3:a:progea:movicon_powerhmi:*:*:*:*:*:*:*:*
progea movicon_powerhmi 11 cpe:2.3:a:progea:movicon_powerhmi:11:*:*:*:*:*:*:*
progea movicon_powerhmi 11.0.1017 cpe:2.3:a:progea:movicon_powerhmi:11.0.1017:*:*:*:*:*:*:*

References for CVE-2011-3491

cvelogic Threat Intelligence