CVE-2012-4031

Exp

Multiple directory traversal vulnerabilities in src/acloglogin.php in Wangkongbao CNS-1000 and 1100 allow remote attackers to read arbitrary files via a .. (dot dot) in the (1) lang or (2) langid cookie to port 85.

Published: 2012-07-17 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-4031 is rated High Exploit Risk (66.1/100): CVSS Medium severity, with high exploitation likelihood (EPSS 72.08%, 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-2012-4031

EDB-ID Source Kind Published Link
19526 exploit_db edb 2012-07-02 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2012-4031

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 2026-03-18 75.59% 72.08% -3.51%
2 2025-10-02 75.26% 75.59% +0.32%
3 2025-03-30 — 75.26% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-4031

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:P/I:N/A:N 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:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2012-4031

Affected software / configurations for CVE-2012-4031

Vendor Product Version Raw CPE
wangkongbao cns-1000 — cpe:2.3:h:wangkongbao:cns-1000:*:*:*:*:*:*:*:*
wangkongbao cns-1100 — cpe:2.3:h:wangkongbao:cns-1100:*:*:*:*:*:*:*:*

References for CVE-2012-4031

cvelogic Threat Intelligence