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CVE-2018-18940

21
FAUCET Score

CVE-2018-18940 describes a reflected Cross-Site Scripting (XSS) vulnerability in the servlet/SnoopServlet component of the discontinued Netscape Enterprise Server 3.63. An unauthenticated attacker could inject malicious HTML or JavaScript into a URL parameter, which would then be reflected by the server and executed in a victim's browser. This vulnerability carries a CVSS v3.0 score of 6.1 (Medium), indicating a low attack complexity and requiring user interaction. Successful exploitation could lead to limited confidentiality and integrity impacts, such as session hijacking or defacement. There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage for this CVE are minimal, reflecting its low profile and the product's discontinuation.

Impacted Technologies

VendorProductVersion(s)CPE
3.63CPE matchmatch criteria
cpe:2.3:a:netscape:enterprise_server:3.63:*:*:*:*:*:*:*

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
1.42%
Probability of exploitation in next 30 days
EPSS Percentile
70.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0142 is in the 82nd percentile among its peer group of 26,221 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

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/150262/Netscape-Enterprise-3.63-Cross-Site-Scripting.html
ExploitThird Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2018/Nov/31
ExploitMailing ListThird Party Advisory