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CVE-2018-15704

38
FAUCET Score

CVE-2018-15704 describes a high-severity stack buffer overflow vulnerability affecting Advantech WebAccess versions 8.3.2 and below. A remote, authenticated attacker can exploit this by sending a specially crafted HTTP request to the broadweb/system/opcImg.asp endpoint. The CVSS score of 8.8 indicates a critical impact, allowing for full confidentiality, integrity, and availability compromise. Despite its high severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

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

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
21.54%
Probability of exploitation in next 30 days
EPSS Percentile
97.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.2154 is in the 96th percentile among its peer group of 17,822 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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