# CVE-2014-0771: Advantech WebAccess File and Directory Information Exposure

> An attacker can trick a user into visiting a malicious page to read local files or access arbitrary URLs via the WebAccess ActiveX control.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 12 Apr 2014
- **Updated:** 19 Sep 2025
- **Also known as:** GHSA-qr2q-986w-ccv6

## What is CVE-2014-0771?

CVE-2014-0771 is a high-severity vulnerability in Advantech WebAccess, published on 12 Apr 2014. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The BWOCXRUN.BwocxrunCtrl.1 control contains a method named 
“OpenUrlToBuffer.” This method takes a URL as a parameter and returns 
its contents to the caller in JavaScript. The URLs are accessed in the 
security context of the current browser session. The control does not 
perform any URL validation and allows “file://” URLs that access the 
local disk.

The method can be used to open a URL (including file URLs) and read 
file URLs through JavaScript. This method could also be used to reach 
any arbitrary URL to which the browser has access.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), CWE-538 (Insertion of Sensitive Information into Externally-Accessible File or Directory)

## Which versions are affected by CVE-2014-0771?

It affects 1 product.


Products: Advantech Advantech Webaccess.

## How do I fix CVE-2014-0771?

No fix has been published for CVE-2014-0771 yet. Limit exposure of the affected software until one is available.

## Is CVE-2014-0771 being exploited?

There is no known exploitation of CVE-2014-0771 in the wild and no public exploit code.

## Other vulnerabilities in Advantech WebAccess

- [CVE-2011-4524](https://insights.sbomify.com/CVE-2011-4524/): Buffer overflow in Advantech/BroadWin WebAccess before 7.0 allows remote attackers to execute arbitrary code via a long string value in unspecified parameters. (critical 10.0)
- [CVE-2011-4525](https://insights.sbomify.com/CVE-2011-4525/): Code injection in n/a (critical 10.0)
- [CVE-2011-4526](https://insights.sbomify.com/CVE-2011-4526/): Memory corruption in n/a (critical 10.0)
- [CVE-2012-0238](https://insights.sbomify.com/CVE-2012-0238/): Stack-based buffer overflow in opcImg.asp in Advantech/BroadWin WebAccess before 7.0 allows remote attackers to execute arbitrary code via unspecified vectors. (critical 10.0)
- [CVE-2012-0240](https://insights.sbomify.com/CVE-2012-0240/): Auth bypass in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2014-0771 and fix it if it is affected.

What it is: CVE-2014-0771 is a high-severity vulnerability in Advantech WebAccess, published on 12 Apr 2014. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2014-0771 in the wild and no public exploit code.

Affected product: Advantech WebAccess. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2014-0771/ (Markdown: https://insights.sbomify.com/CVE-2014-0771/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2014-0771
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2014-0771
- OSV: https://osv.dev/vulnerability/CVE-2014-0771

---
From sbomify Insights: https://insights.sbomify.com/CVE-2014-0771/
Summaries are generated and may contain mistakes; the official description above is the record.