CVE-2020-1613 | Junos OS: BGP session termination upon receipt of specific BGP FlowSpec advertisement.

A vulnerability in the BGP FlowSpec implementation may cause a Juniper Networks Junos OS device to terminate an established BGP session upon receiving a specific BGP FlowSpec advertisement. The BGP NOTIFICATION message that terminates an established BGP session is sent toward the peer device that originally sent the specific BGP FlowSpec advertisement. This specific BGP FlowSpec advertisement received from a BGP peer might get propagated from a Junos OS device running the fixed release to another device that is vulnerable causing BGP session termination downstream. This issue affects IPv4 and IPv6 BGP FlowSpec deployment. This issue affects Juniper Networks Junos OS: 12.3; 12.3X48 on SRX Series; 14.1X53 on EX and QFX Series; 15.1 versions prior to 15.1R7-S5; 15.1F versions prior to 15.1F6-S13; 15.1X49 versions prior to 15.1X49-D180 on SRX Series; 15.1X53 versions prior to 15.1X53-D238 on QFX5200/QFX5110; 15.1X53 versions prior to 15.1X53-D497 on NFX Series; 15.1X53 versions prior to 15.1X53-D592 on EX2300/EX3400; 16.1 versions prior to 16.1R7-S7; 17.1 versions prior to 17.1R2-S12, 17.1R3; 17.2 versions prior to 17.2R2-S7, 17.2R3; 17.2X75 versions prior to 17.2X75-D102, 17.2X75-D110, 17.2X75-D44; 17.3 versions prior to 17.3R2-S5, 17.3R3-S5; 17.4 versions prior to 17.4R1-S8, 17.4R2; 18.1 versions prior to 18.1R2-S4, 18.1R3; 18.2X75 versions prior to 18.2X75-D20.

Published: 2020-04-08 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-1613 is rated Moderate Risk (55.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.45%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-1613

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.71% 0.45% -0.26%
2 2025-03-29 0.45% 0.71% +0.26%
3 2025-03-17 — 0.45% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-1613

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.6 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 4.0 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2020-1613

Affected software / configurations for CVE-2020-1613

Vendor Product Version Raw CPE
juniper junos 12.3 cpe:2.3:o:juniper:junos:12.3:-:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:-:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f1:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f2:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f2-s1:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f2-s2:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f2-s3:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f2-s4:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f3:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f4:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f5:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f5-s7:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s1:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s12:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s2:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s3:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s4:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f6-s7:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:f7:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r1:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r2:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r3:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r4:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r4-s7:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r4-s8:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r4-s9:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r5:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r5-s1:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r5-s5:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r5-s6:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r6:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r6-s1:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r6-s2:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r6-s6:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r7:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r7-s1:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r7-s2:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r7-s3:*:*:*:*:*:*
juniper junos 15.1 cpe:2.3:o:juniper:junos:15.1:r7-s4:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:-:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r1:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r2:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r3:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r3-s10:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r3-s11:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r4:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r4-s12:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r4-s2:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r4-s3:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r4-s4:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r4-s6:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r5:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r5-s4:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r6-s1:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r6-s6:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r7:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r7-s2:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r7-s3:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r7-s4:*:*:*:*:*:*
juniper junos 16.1 cpe:2.3:o:juniper:junos:16.1:r7-s5:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:-:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:r1:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:r2:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:r2-s1:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:r2-s10:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:r2-s11:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:r2-s2:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:r2-s3:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:r2-s4:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:r2-s5:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:r2-s6:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:r2-s7:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:r2-s8:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:r2-s9:*:*:*:*:*:*
juniper junos 17.1 cpe:2.3:o:juniper:junos:17.1:r3:*:*:*:*:*:*
juniper junos 17.2 cpe:2.3:o:juniper:junos:17.2:-:*:*:*:*:*:*
juniper junos 17.2 cpe:2.3:o:juniper:junos:17.2:r1:*:*:*:*:*:*
juniper junos 17.2 cpe:2.3:o:juniper:junos:17.2:r1-s1:*:*:*:*:*:*

References for CVE-2020-1613

URL Tags
https://kb.juniper.net/JSA10996 Vendor Advisory
cvelogic Threat Intelligence