CVE-2017-10614 — Junos OS: A remote unauthenticated attacker can consume large amounts of CPU and/or memory through telnetd

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HIGH

Junos OS: A remote unauthenticated attacker can consume large amounts of CPU and/or memory through telnetd

Published Oct 13, 2017

7.5

HIGH

CVSS 3.0

EPSS 1.71%

Description

A vulnerability in telnetd service on Junos OS allows a remote attacker to cause a limited memory and/or CPU consumption denial of service attack. This issue was found during internal product security testing. Affected releases are Juniper Networks Junos OS 12.1X46 prior to 12.1X46-D45; 12.3X48 prior to 12.3X48-D30; 14.1 prior to 14.1R4-S9, 14.1R8; 14.2 prior to 14.2R6; 15.1 prior to 15.1F5, 15.1R3; 15.1X49 prior to 15.1X49-D40; 15.1X53 prior to 15.1X53-D232, 15.1X53-D47.

Affected products

Vendor Juniper Networks Product Junos OS Default
n/a
- Version
  12.1X46 prior to 12.1X46-D45
  Status
  affected
  Constraints
  -
- Version
  12.3X48 prior to 12.3X48-D30
  Status
  affected
  Constraints
  -
- Version
  14.1 prior to 14.1R4-S9, 14.1R8
  Status
  affected
  Constraints
  -
- Version
  14.2 prior to 14.2R6
  Status
  affected
  Constraints
  -
- Version
  15.1 prior to 15.1F5, 15.1R3
  Status
  affected
  Constraints
  -
- Version
  15.1X49 prior to 15.1X49-D40
  Status
  affected
  Constraints
  -
- Version
  15.1X53 prior to 15.1X53-D47, 15.1X53-D232
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Juniper Networks

Junos OS

n/a

Version	Status	Constraints
12.1X46 prior to 12.1X46-D45	affected	-
12.3X48 prior to 12.3X48-D30	affected	-
14.1 prior to 14.1R4-S9, 14.1R8	affected	-
14.2 prior to 14.2R6	affected	-
15.1 prior to 15.1F5, 15.1R3	affected	-
15.1X49 prior to 15.1X49-D40	affected	-
15.1X53 prior to 15.1X53-D47, 15.1X53-D232	affected	-

Remediation

Vendor solution

Disable telnet services.

It is good security practice to limit the exploitable attack surface of critical infrastructure networking equipment. Use access lists or firewall filters to limit access to the device from trusted, administrative networks or hosts.

Metrics

1.71% 0.01714

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01714

Score over time

2021–2026

EPSS v1
EPSS v2
EPSS v3
EPSS v5

Percentile over time

EPSS v1
EPSS v2
EPSS v3
EPSS v5

Table of values (14 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.71% (0.01714)	76.56th	v5 (v2026.06.15)
Jun 15, 2026	1.71% (0.01714)	74.35th	v5 (v2026.06.15)
Jul 20, 2024	0.24% (0.00236)	62.10th	v3 (v2023.03.01)
Jun 23, 2024	0.24% (0.00236)	61.90th	v3 (v2023.03.01)
Jan 18, 2024	0.21% (0.00209)	58.90th	v3 (v2023.03.01)
Mar 7, 2023	0.21% (0.00207)	56.85th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Sep 17, 2022	1.05% (0.01055)	50.47th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)
Feb 3, 2022	0.65% (0.00651)	18.22th	v1
Jan 6, 2022	0.65% (0.00651)	17.65th	v1
Sep 1, 2021	0.65% (0.00651)	45.91th	v1
Apr 14, 2021	0.65% (0.00651)	0.00th	v1