PatchTheCVECVE-2018-15703: Advantech WebAccess 8.3.2 and below is vulnerable to multiple reflected cross site scripting vulnerabilities
CVE-2018-15703 is a medium-severity flaw (CVSS 6.1) affecting webaccess. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Advantech WebAccess 8.3.2 and below is vulnerable to multiple reflected cross site scripting vulnerabilities. A remote unauthenticated attacker could potentially exploit this vulnerability by tricking a victim to supply malicious HTML or JavaScript code to WebAccess, which is then reflected back to the victim and executed by the web browser.
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.1 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.9% (top 41%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2018-10-22 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2018-15703?
webaccess: upgrade to newer than 8.3.2. Exact commands for each OS are on this page.
Is CVE-2018-15703 being exploited?
CVE-2018-15703 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2018-15703 affect?
CVE-2018-15703 affects webaccess. Severity is medium (CVSS 6.1). Advantech WebAccess 8.3.2 and below is vulnerable to multiple reflected cross site scripting vulnerabilities. A remote unauthenticated attacker could potentially exploit this vulnerability by tricking a victim to supply malicious HTML or Ja
How urgent is CVE-2018-15703?
Priority 41/100. Public exploit reference
Software pages
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