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Fencer Intel
medium 6.1

CVE-2018-18991 json

Reflected cross-site scripting (non-persistent) in SCADA WebServer (Versions prior to 2.03.0001) could allow an attacker to send a crafted…

published 7y ago modified 4mo ago also EUVD-2018-10695

cvss
6.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 58%
public exploits
0
none known

Summary

Reflected cross-site scripting (non-persistent) in SCADA WebServer (Versions prior to 2.03.0001) could allow an attacker to send a crafted URL that contains JavaScript, which can be reflected off the web application to the victim's browser.

Patch / fix

  • spidercontrol scada_webserver 2.03.0001

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-18-338-02 updated cvss 6.1

SpiderControl SCADA WebServer

  • SpiderControl SCADA WebServer < 2.03.0001
    affected: mitigation “SpiderControl has released Version 2.03.0001, which fixes the vulnerability. The update can be found here:”

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.85% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

  • n/a SCADA WebServer

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.