Junos OS: Receipt of malformed RSVP packet may lead to RPD denial of service

published 2018-07-11 8y ago modified 2026-06-17 4mo ago also EUVD-2018-0851

cvss: 7.5; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.4%; EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits: 0; none known

Receipt of a crafted or malformed RSVP PATH message may cause the routing protocol daemon (RPD) to hang or crash. When RPD is unavailable, routing updates cannot be processed which can lead to an extended network outage. If RSVP is not enabled on an interface, then the issue cannot be triggered via that interface. This issue only affects Juniper Networks Junos OS 16.1 versions prior to 16.1R3. This issue does not affect Junos releases prior to 16.1R1.

Patch / fix

fixed in 1

Juniper Networks Junos OS 16.1R3

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Exploit prediction

2.39% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	3.0	5.9	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	4.3	AV:N/AC:M/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 /JSA10861
mitigation, vendor-advisory
securitytracker.com /id/1041318
vdb-entry, third-party-advisory
securityfocus.com /bid/104721
vdb-entry, third-party-advisory

Sources

CVE List CVE-2018-0027
NVD CVE-2018-0027

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