Advantech Webaccess
CVE-2012-0240
CRITICAL
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK
2 techniques across 2 tactics: Defense Evasion, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 10.0 (CRITICAL). Attack characteristics: network attack vector, low complexity. EPSS exploitation probability: 1.43%. |
| Exploit ScenarioDerived | A remote attacker could bypass authentication mechanisms to gain unauthorized access by sending crafted requests to the affected application. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAI
GbScriptAddUp.asp in Advantech/BroadWin WebAccess before 7.0 does not properly perform authentication, which allows remote attackers to execute arbitrary code via unspecified vectors. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. This Improper Authentication vulnerability could allow attackers to bypass authentication mechanisms to gain unauthorized access.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. GbScriptAddUp.asp in Advantech/BroadWin WebAccess before 7.0 does not properly perform authentication, which allows remote attackers to execute arbitrary code via unspecified vectors. Affected products include: Advantech Advantech Webaccess. Version information: before 7.0.
Know when Advantech Webaccess gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
AV:N/AC:L/Au:N/C:C/I:C/A:C
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
GbScriptAddUp.asp in Advantech/BroadWin WebAccess before 7.0 does not properly perform authentication, which allows remote attackers to execute arbitrary code via unspecified vectors.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
Affected Products (CPE)CVE.org
More in Advantech Webaccess
View allAn attacker using SQL injection may use arguments to construct queries without proper sanitization. Rated high severity
Multiple stack-based buffer overflows in Advantech WebAccess before 7.2 allow remote attackers to execute arbitrary code
Format string vulnerability in Advantech/BroadWin WebAccess before 7.0 allows remote attackers to execute arbitrary code
Advantech/BroadWin WebAccess before 7.0 allows remote attackers to cause a denial of service (memory corruption) via a m
Buffer overflow in an ActiveX control in bwocxrun.ocx in Advantech/BroadWin WebAccess before 7.0 allows remote attackers
Stack-based buffer overflow in opcImg.asp in Advantech/BroadWin WebAccess before 7.0 allows remote attackers to execute
upAdminPg.asp in Advantech WebAccess before 7.2 allows remote authenticated users to discover credentials by reading HTM
An attacker may pass an overly long value from the AccessCode2 argument to the control to overflow the static stack buff
An attacker may exploit this vulnerability by passing an overly long value from the AccessCode argument to the control.
An attacker can exploit this vulnerability by copying an overly long NodeName2 argument into a statically sized buffer o
To exploit this vulnerability, the attacker sends data from the GotoCmd argument to control. Rated high severity (CVSS 7
By providing an overly long string to the NodeName parameter, an attacker may be able to overflow the static stack buffe
GitHub PoC
Exploit-DB