Junos OS: Denial of Service in J-Web

published 2018-10-10 8y ago modified 2026-06-17 4mo ago also EUVD-2018-0886

cvss: 5.3; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.3%; EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits: 0; none known

A Denial of Service vulnerability in J-Web service may allow a remote unauthenticated user to cause Denial of Service which may prevent other users to authenticate or to perform J-Web operations. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D77 on SRX Series; 12.3 versions prior to 12.3R12-S10; 12.3X48 versions prior to 12.3X48-D60 on SRX Series; 15.1 versions prior to 15.1R7; 15.1F6; 15.1X49 versions prior to 15.1X49-D120 on SRX Series; 15.1X53 versions prior to 15.1X53-D59 on EX2300/EX3400 Series; 15.1X53 versions prior to 15.1X53-D67 on QFX10K Series; 15.1X53 versions prior to 15.1X53-D234 on QFX5200/QFX5110 Series; 15.1X53 versions prior to 15.1X53-D470, 15.1X53-D495 on NFX Series; 16.1 versions prior to 16.1R6; 16.2 versions prior to 16.2R2-S6, 16.2R3; 17.1 versions prior to 17.1R2-S6, 17.1R3; 17.2 versions prior to 17.2R3; 17.3 versions prior to 17.3R2. No other Juniper Networks products or platforms are affected by this issue.

Patch / fix

fixed in 1

Juniper Networks Junos OS 12.1X46-D77, 12.3R12-S10, 12.3X48-D60, 15.1R7, 15.1X49-D120, 15.1X53-D59, 15.1X53-D67, 15.1X53-D234, 15.1X53-D470, 15.1X53-D495, 16.1R6, 16.2R2-S6, 16.2R3, 17.1R2-S6, 17.1R3, 17.2R3, 17.3R2

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Exploit prediction

2.30% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	5.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

Juniper Networks Junos OS

Classification

Weakness

CWE-20 Improper Input Validation

References

kb.juniper.net /JSA10897
vendor-advisory
securitytracker.com /id/1041860
vdb-entry, third-party-advisory

Sources

CVE List CVE-2018-0062
NVD CVE-2018-0062

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