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CVE-2016-4923

21
FAUCET Score

CVE-2016-4923 describes an insufficient cross-site scripting (XSS) protection vulnerability in the J-Web component of Juniper Networks Junos OS. This flaw allows a remote, unauthenticated attacker to inject web scripts or HTML, potentially stealing sensitive data and credentials from a J-Web session and performing administrative actions on the Junos device. The vulnerability has a CVSS v3 score of 6.1 (Medium), indicating a network-based attack with low complexity, requiring user interaction, and leading to low confidentiality and integrity impacts. There is 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
11.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos:11.4:*:*:*:*:*:*:*
11.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos:11.4:r1:*:*:*:*:*:*
11.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos:11.4:r10:*:*:*:*:*:*
11.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos:11.4:r11:*:*:*:*:*:*
11.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos:11.4:r12:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.0HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.1
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.01%
Probability of exploitation in next 30 days
EPSS Percentile
59.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0101 is in the 72nd percentile among its peer group of 26,220 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

Vendor Patches (1)

junipervendor investigatingvia nvd_reference
View patch

References

kb.juniper.net / JSA10764
Vendor Advisory
securityfocus.com / bid/93529
Third Party AdvisoryVDB Entry