Advantech WebAccess File and Directory Information Exposure

published 2014-04-12 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-0802

cvss: 7.5; version 2.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

Advantech WebAccess 7.2

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-14-079-03 updated 2025-06-09 cvss 5.0

Advantech WebAccess Vulnerabilities

Advantech WebAccess <=7.1
affected: mitigation

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.41% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

Advantech WebAccess

Classification

Weakness

CWE-538 Insertion of Sensitive Information into Externally-Accessible File or Directory
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

cisa.gov /news-events/ics-advisories/icsa-14-079-03
securityfocus.com /bid/66740
vdb-entry
webaccess.advantech.com /
ics-cert.us-cert.gov /advisories/ICSA-14-079-03
us-government-resource

Sources

CVE List CVE-2014-0771
NVD CVE-2014-0771

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary