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CVE-2017-2321

27
FAUCET Score

CVE-2017-2321 describes a critical vulnerability in Juniper Networks NorthStar Controller Application versions prior to 2.1.0 Service Pack 1. This flaw allows an unauthenticated, network-based attacker to disrupt system services, modify system states, and potentially disclose sensitive information through various attack vectors, including man-in-the-middle attacks and file injections. With a CVSS score of 8.6 (HIGH), the vulnerability is easily exploitable with low attack complexity, leading to potential partial to full denial of service, data modification, and information disclosure. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.1.0CPE matchmatch criteria
cpe:2.3:a:juniper:northstar_controller:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
4.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.45%
Probability of exploitation in next 30 days
EPSS Percentile
70.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0145 is in the 52nd percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 (1)

juniperworkaround availablevia nvd_reference
View patch

References

kb.juniper.net / JSA10783
MitigationVendor Advisory
securityfocus.com / bid/97693
Third Party AdvisoryVDB Entry