CVE-2011-4881

Exp

The web server in Certec atvise webMI2ADS (aka webMI) before 2.0.2 does not properly check return values from functions, which allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted HTTP request.

Published: 2012-04-13 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4881 is rated High Exploit Risk (64.3/100): CVSS Medium severity, with high exploitation likelihood (EPSS 52.36%, 98th percentile). 1 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-2011-4881

EDB-ID Source Kind Published Link
17963 exploit_db edb 2011-10-10 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2011-4881

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 2026-05-19 58.43% 52.36% -6.06%
2 2026-03-27 49.28% 58.43% +9.15%
3 2026-03-05 — 49.28% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4881

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P 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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2011-4881

NVD evaluator notes for CVE-2011-4881

Comment: Per: http://cwe.mitre.org/data/definitions/476.html 'CWE-476: NULL Pointer Dereference'

Affected software / configurations for CVE-2011-4881

Vendor Product Version Raw CPE
atvise webmi2ads <= 2.0.1 cpe:2.3:a:atvise:webmi2ads:*:*:*:*:*:*:*:*
atvise webmi2ads 1.0 cpe:2.3:a:atvise:webmi2ads:1.0:*:*:*:*:*:*:*
atvise webmi2ads 2.0 cpe:2.3:a:atvise:webmi2ads:2.0:*:*:*:*:*:*:*

References for CVE-2011-4881

cvelogic Threat Intelligence