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CVE-2018-1000663

22
FAUCET Score

CVE-2018-1000663 describes a Buffer Overflow vulnerability in jsish version 2.4.70 2.047, specifically within the _jsi_evalcode function in jsiEval.c. This flaw can lead to a denial of service through a segmentation fault when a victim executes specially crafted JavaScript code. Rated as Medium severity with a CVSS score of 6.5, the attack requires user interaction and network access but has low attack complexity, primarily impacting availability. There is currently 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
2.4.70_2.047CPE matchmatch criteria
cpe:2.3:a:jsish:jsish:2.4.70_2.047:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 64th 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

Remediation records are not available for this CVE.

References

jsish.org / fossil/jsi/tktview/c253f6d80c9018d841e857b69e7ad6436ed95cb9
PatchVendor Advisory