CVE-2020-1601

Junos OS: Upon receipt of certain types of malformed PCEP packets the pccd process may crash.

HIGH

7.5

CVSS Score

Published: January 15, 2020 at 08:40 AM UTC

Updated: June 17, 2026 at 03:01 AM UTC

22 products affected across 2 vendorsJunosSRX5600SRX5800

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Severity

HIGH7.5

Exploit prediction

EPSS 1%

Description

Certain types of malformed Path Computation Element Protocol (PCEP) packets when received and processed by a Juniper Networks Junos OS device serving as a Path Computation Client (PCC) in a PCEP environment using Juniper's path computational element protocol daemon (pccd) process allows an attacker to cause the pccd process to crash and generate a core file thereby causing a Denial of Service (DoS). Continued receipt of this family of malformed PCEP packets will cause an extended Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 15.1 versions prior to 15.1F6-S13, 15.1R7-S4; 15.1X49 versions prior to 15.1X49-D180 on SRX Series; 15.1X53 versions prior to 15.1X53-D238, 15.1X53-D496, 15.1X53-D592; 16.1 versions prior to 16.1R7-S4; 16.2 versions prior to 16.2R2-S9; 17.1 versions prior to 17.1R2-S11, 17.1R3; 17.2 versions prior to 17.2R1-S9; 17.2 version 17.2R2 and later prior to 17.2R3-S2; 17.3 versions prior to 17.3R3-S3; 17.4 versions prior to 17.4R2-S2, 17.4R3; 18.1 versions prior to 18.1R3-S2; 18.2 versions prior to 18.2R2-S6, 18.2R3; 18.2X75 versions prior to 18.2X75-D40; 18.3 versions prior to 18.3R2; 18.4 versions prior to 18.4R1-S2, 18.4R2. This issue does not affect releases of Junos OS prior to 15.1R1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Junos · Juniper Networks

95%

15.1 ≤ v < 15.1F6-S13, 15.1R7-S415.1X49 ≤ v < 15.1X49-D18015.1X53 ≤ v < 15.1X53-D238, 15.1X53-D496, 15.1X53-D59216.1 ≤ v < 16.1R7-S416.2 ≤ v < 16.2R2-S917.1 ≤ v < 17.1R2-S11, 17.1R317.2 ≤ v < 17.2R1-S9, 17.2R3-S217.3 ≤ v < 17.3R3-S317.4 ≤ v < 17.4R2-S2, 17.4R318.1 ≤ v < 18.1R3-S218.2 ≤ v < 18.2R318.2X75 ≤ v < 18.2X75-D4018.3 ≤ v < 18.2R2-S6, 18.3R218.4 ≤ v < 18.4R1-S2, 18.4R215.1 15.1 f6-s12 15.1 r1 15.1 r2 15.1 r3 15.1 r4 15.1 r4-s9 15.1 r5 15.1 r6 15.1 r6-s6 15.1 r7-s1 15.1 r7-s2 15.1 r7-s3 15.1X49 15.1X53 15.1x49 d10 15.1x49 d150 15.1x49 d20 15.1x49 d30 15.1x49 d35 15.1x49 d40 15.1x49 d45 15.1x49 d50 15.1x49 d55 15.1x49 d60 15.1x49 d65 15.1x49 d70 15.1x49 d75 15.1x49 d80 15.1x53 d20 15.1x53 d21 15.1x53 d210 15.1x53 d25 15.1x53 d30 15.1x53 d31 15.1x53 d32 15.1x53 d33 15.1x53 d34 15.1x53 d40 15.1x53 d45 15.1x53 d470 15.1x53 d495 15.1x53 d56 15.1x53 d60 15.1x53 d61 15.1x53 d62 15.1x53 d63 15.1x53 d65 15.1x53 d70 16.1 16.1 r1 16.1 r2 16.1 r3 16.1 r3-s10 16.1 r4 16.1 r5-s4 16.1 r6-s1 16.1 r7 16.1 r7-s2 16.1 r7-s3 16.2 16.2 r1 16.2 r2 16.2 r2-s1 16.2 r2-s2 16.2 r2-s5 16.2 r2-s6 16.2 r2-s7 16.2 r2-s8 17.1 17.1 r1 17.1 r2-s1 17.1 r2-s10 17.1 r2-s2 17.1 r2-s3 17.1 r2-s4 17.1 r2-s5 17.1 r2-s6 17.1 r2-s7 17.1 r2-s9 17.2 17.2 r1-s2 17.2 r1-s4 17.2 r1-s7 17.2 r1-s8 17.2 r2-s6 17.2 r2-s7 17.2 r3-s1 17.3 17.3 r1-s1 17.3 r2 17.3 r2-s1 17.3 r2-s2 17.3 r3-s1 17.3 r3-s2 17.3 r3-s3 17.4 17.4 r1 17.4 r1-s1 17.4 r1-s2 17.4 r1-s4 17.4 r1-s6 17.4 r1-s7 17.4 r2 17.4 r2-s1 18.1 18.1 r2 18.1 r2-s1 18.1 r2-s2 18.1 r2-s4 18.1 r3 18.2 18.2 r1-s5 18.2 r2-s1 18.2 r2-s2 18.2 r2-s3 18.2 r2-s4 18.2X7518.2x7518.2x75 d20 18.3 18.3 r1 18.3 r1-s1 18.3 r1-s2 18.3 r1-s3 18.4 18.4 r1

Affected range stops below 15.1F6-S13, 15.1R7-S4, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X49-D180, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.1X53-D238, 15.1X53-D496, 15.1X53-D592, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.1R7-S4, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.2R2-S9, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.1R2-S11, 17.1R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.2R1-S9, 17.2R3-S2, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.3R3-S3, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.4R2-S2, 17.4R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.1R3-S2, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.2R2-S6, 18.3R2, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.2R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.2X75-D40, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.4R1-S2, 18.4R2, so it looks safe — our inference, not a vendor statement

juniper-srx100 (environment) · juniper-srx110 (environment) · juniper-srx1400 (environment) · juniper-srx1500 (environment) · juniper-srx210 (environment) · juniper-srx220 (environment) · juniper-srx240 (environment) · juniper-srx300 (environment) · juniper-srx320 (environment) · juniper-srx340 (environment) · juniper-srx3400 (environment) · juniper-srx345 (environment) · juniper-srx3600 (environment) · juniper-srx4100 (environment) · juniper-srx4200 (environment) · juniper-srx4600 (environment) · juniper-srx5400 (environment) · juniper-srx550 (environment) · juniper-srx5600 (environment) · juniper-srx5800 (environment) · juniper-srx650 (environment)

SRX100 · Juniperdevice

80%

All versions

SRX110 · Juniperdevice

80%

All versions

SRX1400 · Juniperdevice

80%

All versions

Srx1500 · Juniperdevice

80%

All versions