CVE-2018-7503

In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard versions V.2.0.15 and prior, WebAccess Scada Node versions prior to 8.3.1, and WebAccess/NMS 2.0.3 and prior, a path transversal vulnerability has been identified, which may allow an attacker to disclose sensitive information on the target.

Published: 2018-05-15 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-7503 is rated Moderate Risk (58.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.71%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-7503

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-29 1.80% 1.71% -0.09%
2 2025-04-15 2.07% 1.80% -0.27%
3 2025-03-30 — 2.07% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-7503

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2018-7503

Affected software / configurations for CVE-2018-7503

Vendor Product Version Raw CPE
advantech webaccess <= 8.2_20170817 cpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*
advantech webaccess <= 8.3.0 cpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*
advantech webaccess_dashboard <= 2.0.15 cpe:2.3:a:advantech:webaccess_dashboard:*:*:*:*:*:*:*:*
advantech webaccess_scada < 8.3.1 cpe:2.3:a:advantech:webaccess_scada:*:*:*:*:*:*:*:*
advantech webaccess\/nms <= 2.0.3 cpe:2.3:a:advantech:webaccess\/nms:*:*:*:*:*:*:*:*

References for CVE-2018-7503

URL Tags
http://www.securityfocus.com/bid/104190 Third Party Advisory VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-18-135-01 Third Party Advisory US Government Resource
cvelogic Threat Intelligence