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CVE-2018-15703

21
FAUCET Score

CVE-2018-15703 describes multiple reflected cross-site scripting (XSS) vulnerabilities in Advantech WebAccess versions 8.3.2 and below. A remote, unauthenticated attacker can exploit this by tricking a victim into executing malicious HTML or JavaScript code, which is then reflected by WebAccess and run in the victim's browser. This vulnerability has a CVSS score of 6.1 (Medium), indicating a network-based attack with low complexity, requiring user interaction, and leading to low impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.3.2CPE matchmatch criteria
cpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.88%
Probability of exploitation in next 30 days
EPSS Percentile
55.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0088 is in the 66th percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

dogukanurkervendor investigatingvia llm_extracted
posthogvendor investigatingvia llm_extracted
qlikvendor investigatingvia llm_extracted

Vendor Advisories (3)

dogukanurkerllm-dogukanurker-4bb4a41780ebe8c5HIGH

[R1] Multiple Advantech WebAccess Vulnerabilities

Oct 18, 2018
qlikllm-qlik-0383491b70c7b7f5HIGH

[R1] Multiple Advantech WebAccess Vulnerabilities

Oct 18, 2018
posthogllm-posthog-6f5a0269e5258bb8HIGH

[R1] Multiple Advantech WebAccess Vulnerabilities

Oct 18, 2018

References

tenable.com / security/research/tra-2018-33
ExploitThird Party Advisory