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CVE-2021-0211

CVE.org · Published

Historical CVEsJSONAI instructions

Record status
Published
Identifier year (not publication year)
2021
Source publication
Source updated
Imported by cveboard
Source snapshot
cve_2026-10-24_midnight_baseline ·

Plain text

CNA source text (English)

Junos OS and Junos OS Evolved: Upon receipt of a specific BGP FlowSpec message network traffic may be disrupted.

An improper check for unusual or exceptional conditions in Juniper Networks Junos OS and Junos OS Evolved Routing Protocol Daemon (RPD) service allows an attacker to send a valid BGP FlowSpec message thereby causing an unexpected change in the route advertisements within the BGP FlowSpec domain leading to disruptions in network traffic causing a Denial of Service (DoS) condition. Continued receipt of these update messages will cause a sustained Denial of Service condition. This issue affects Juniper Networks: Junos OS: All versions prior to 17.3R3-S10 with the exceptions of 15.1X49-D240 on SRX Series and 15.1R7-S8 on EX Series; 17.3 versions prior to 17.3R3-S10; 17.4 versions prior to 17.4R2-S12, 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R2-S8, 18.2R3-S6; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S6, 18.4R3-S6; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3; 19.2 versions prior to 19.2R3-S1; 19.3 versions prior to 19.3R2-S5, 19.3R3-S1; 19.4 versions prior to 19.4R1-S3, 19.4R2-S3, 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S3 20.2R2; 20.3 versions prior to 20.3R1-S1, 20.3R2. Junos OS Evolved: All versions prior to 20.3R1-S1-EVO, 20.3R2-EVO.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Junos OS

Vendor
Juniper Networks
Product
Junos OS
Platforms
  • EX Series
Default status
Unknown
Junos OS · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
15.1affectedcustom15.1R7-S8UnavailableNone listed

Junos OS

Vendor
Juniper Networks
Product
Junos OS
Platforms
Unknown
Default status
Unknown
Junos OS · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
17.3affectedcustom17.3R3-S10UnavailableNone listed
17.4affectedcustom17.4R2-S12, 17.4R3-S4UnavailableNone listed
18.1affectedcustom18.1R3-S12UnavailableNone listed
18.2affectedcustom18.2R2-S8, 18.2R3-S6UnavailableNone listed
18.3affectedcustom18.3R3-S4UnavailableNone listed
18.4affectedcustom18.4R1-S8, 18.4R2-S6, 18.4R3-S6UnavailableNone listed
19.1affectedcustom19.1R1-S6, 19.1R2-S2, 19.1R3-S3UnavailableNone listed
19.2affectedcustom19.2R3-S1UnavailableNone listed
19.3affectedcustom19.3R2-S5, 19.3R3-S1UnavailableNone listed
19.4affectedcustom19.4R1-S3, 19.4R2-S3, 19.4R3UnavailableNone listed
20.1affectedcustom20.1R2UnavailableNone listed
20.2affectedcustom20.2R1-S3 20.2R2UnavailableNone listed
20.3affectedcustom20.3R1-S1, 20.3R2UnavailableNone listed

Junos OS

Vendor
Juniper Networks
Product
Junos OS
Platforms
  • SRX Series
Default status
Unknown
Junos OS · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
15.1X49affectedcustom15.1X490-D240UnavailableNone listed

Junos OS Evolved

Vendor
Juniper Networks
Product
Junos OS Evolved
Platforms
Unknown
Default status
Unknown
Junos OS Evolved · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
unspecifiedaffectedcustom20.3R1-S1-EVO, 20.3R2-EVOUnavailableNone listed