Advantech WebAccess Authentication Bypass Issues
The ChkCookie subroutine in an ActiveX control in broadweb/include/gChkCook.asp in Advantech WebAccess before 7.2 allows remote attackers to read arbitrary files via a crafted call.
- Published
- Jul 19, 2014
- Updated
- Jun 16, 2026
- EPSS
- 1.5% · 74th percentile
- CWE
- CWE-592
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Report tools
Action score
17
Monitor
Low priority for now.
- CVSS
- 17 / 40 · 4.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.5%
CNA vs NVD score
- NVD
- 4.3
- CNA · icscert
- 7.5
- 3.2 point gap
AV:N/AC:L/Au:N/C:P/I:P/A:P
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| advantech | advantech webaccess | cpe:2.3:a:advantech:advantech_webaccess |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- advantech advantech webaccessup to 7.1 inclusive
- advantech advantech webaccess5.0
- advantech advantech webaccess6.0
- advantech advantech webaccess7.0
Versions reported by the vendor
Affected version ranges reported by the assigning authority (icscert). Independent of NVD's CPE analysis and usually ahead of it.
Advantech WebAccess
- 7.2not affected
- up to and including 7.1affected
Same product
advantech: all recordsOther highest-scoring records for the same primary product.
- CVE-2014-2364Advantech WebAccess Stack-Based Buffer Overflow48Plan
- CVE-2012-0242Format string vulnerability in Advantech/BroadWin WebAccess before 7.0 allows remote attackers to execute arbitrary code via format string s42Plan
- CVE-2012-0243Buffer overflow in an ActiveX control in bwocxrun.ocx in Advantech/BroadWin WebAccess before 7.0 allows remote attackers to execute arbitrar41Plan
- CVE-2012-0240GbScriptAddUp.asp in Advantech/BroadWin WebAccess before 7.0 does not properly perform authentication, which allows remote attackers to exec41Plan
- CVE-2012-0238Stack-based buffer overflow in opcImg.asp in Advantech/BroadWin WebAccess before 7.0 allows remote attackers to execute arbitrary code via u41Plan
- CVE-2011-4526Buffer overflow in an ActiveX control in Advantech/BroadWin WebAccess before 7.0 might allow remote attackers to execute arbitrary code via 41Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
If successful
- Confidentiality
- P · data can be read
- Integrity
- none
- Availability
- none
- Attack complexity
- M
- Confidentiality impact
- P
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-592 · DEPRECATED: Authentication Bypass IssuesCVSS vector
AV:N/AC:M/Au:N/C:P/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- webaccess.advantech.com/
- www.cisa.gov/news-events/ics-advisories/icsa-14-198-02
- ics-cert.us-cert.gov/advisories/ICSA-14-198-02
Vendor advisories and official records. Exploit/PoC links are deliberately left out.