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CVE record · CVE-2021-0277

Junos OS and Junos OS Evolved: LLDP Out-of-Bounds Read vulnerability in l2cpd

CVSS 8.8 HighEPSS 0.0065 · 51st percentile

Published by the CVE Program (CNA: juniper) at 15 Jul 2021, 20:00 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
  • affected 12.3 to before 12.3R12-S18 custom
  • affected 15.1 to before 15.1R7-S9 custom
  • affected 17.3 to before 17.3R3-S12 custom
  • affected 17.4 to before 17.4R2-S13, 17.4R3-S5 custom
  • affected 18.1 to before 18.1R3-S13 custom
  • affected 18.2 to before 18.2R3-S8 custom
  • affected 18.3 to before 18.3R3-S5 custom
  • affected 18.4 to before 18.4R2-S8, 18.4R3-S8 custom
  • affected 19.1 to before 19.1R3-S5 custom
  • affected 19.2 to before 19.2R3-S3 custom
  • affected 19.3 to before 19.3R2-S6, 19.3R3-S2 custom
  • affected 19.4 to before 19.4R1-S4, 19.4R2-S4, 19.4R3-S3 custom
  • and 4 more
Juniper Networks Junos OS Evolved
  • affected unspecified to before 20.4R2-EVO custom
Identifiers
CVE-2021-0277
CNA
juniper
Weakness (CWE)
CWE-125
Tags
Published
15 Jul 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
8.8 High 3.1 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CNA (juniper)
  • CISA KEV Not listed.
  • EPSS 0.0065, the 51st 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 15 Jul 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.