CVE record · CVE-2021-31382

Junos OS: PTX1000 System, PTX10002-60C System: After upgrading, configured firewall filters may be applied on incorrect interfaces

CVSS 6.5 MediumEPSS 0.0060 · 49th percentile

Published by the CVE Program (CNA: juniper) at 19 Oct 2021, 18:17 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
Vendor	Product	Versions
Juniper Networks	Junos OS	unaffected unspecified to before 17.2R1 custom affected 17.2R1 to before 17.2* custom affected 17.3 to before 17.3R3-S12 custom affected 17.4 to before 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 18.4R1-S8, 18.4R2-S8, 18.4R3-S8 custom affected 19.1 to before 19.1R3-S5 custom affected 19.2 to before 19.2R3-S2 custom affected 19.3 to before 19.3R2-S6, 19.3R3-S3 custom affected 19.4 to before 19.4R2-S4, 19.4R3-S3 custom and 4 more
Juniper Networks	Junos OS	affected 18.4 to before 18.4R3-S9 custom affected 19.1R1 to before 19.1* custom affected 19.4 to before 19.4R2-S5, 19.4R3-S5 custom affected 20.1 to before 20.1R3-S1 custom affected 20.2 to before 20.2R3-S2 custom affected 20.3 to before 20.3R3-S1 custom affected 20.4R1 to before 20.4* custom affected 21.1 to before 21.1R2 custom affected 21.2R1 to before 21.2* custom affected 21.3 to before 21.3R2 custom unaffected 18.2 to before 18.2R1 custom

Identifiers: CVE-2021-31382
CNA: juniper
Weakness (CWE): CWE-362
Tags: Juniper Networks Junos OS
Race condition
Published: 19 Oct 2021
Updated: 17 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

Score	Rating	CVSS	Vector	Source
6.5	Medium	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L	CNA (juniper)

CISA KEV Not listed.
EPSS 0.0060, the 49th percentile, on 8 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 19 Oct 2021. New records show when each source confirmed them.

Sources

References from the CNA

kb.juniper.net/JSA11250 confirm
kb.juniper.net/KB10956

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.