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CVE record · CVE-2021-0236

Junos OS: A specific BGP VPNv6 flowspec message causes routing protocol daemon (rpd) process to crash with a core.

CVSS 6.5 MediumEPSS 0.0085 · 58th percentile

Published by the CVE Program (CNA: juniper) at 22 Apr 2021, 19:37 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Juniper Networks Junos OS
  • unaffected unspecified to before 18.4R1 custom
  • affected 18.4 to before 18.4R1-S8, 18.4R2-S7, 18.4R3-S7 custom
  • affected 19.1 to before 19.1R2-S2, 19.1R3-S4 custom
  • affected 19.2 to before 19.2R1-S6, 19.2R3-S2 custom
  • affected 19.3 to before 19.3R3-S2 custom
  • affected 19.4 to before 19.4R2-S4, 19.4R3-S1 custom
  • affected 20.1 to before 20.1R2, 20.1R3, 20.1R3-EVO custom
  • affected 20.2 to before 20.2R2, 20.2R3, 20.2R3-EVO custom
  • affected 20.3 to before 20.3R1-S1, 20.3R2, 20.3R2-EVO custom
Juniper Networks Junos OS Evolved
  • unaffected unspecified to before 18.4R1-EVO custom
  • affected 20.3-EVO to before 20.3R2-EVO custom
Identifiers
CVE-2021-0236
CNA
juniper
Weakness (CWE)
CWE-754
Tags
Published
22 Apr 2021
Updated
16 Sept 2024

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.5 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CNA (juniper)
  • CISA KEV Not listed.
  • EPSS 0.0085, the 58th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 22 Apr 2021. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.