CVE record · CVE-2020-1631

Out of Cycle Security Advisory: Junos OS: Security vulnerability in J-Web and web based (HTTP/HTTPS) services

CVSS 8.8 HighCriticalIn CISA KEVEPSS 0.049 · 92nd percentile

Critical, because:

In CISA’s KEV catalogue since 25 Mar 2022: it is known to be exploited.

Published by the CVE Program (CNA: juniper) at 4 May 2020, 09:25 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	affected 12.3 to before 12.3R12-S16 custom affected 12.3X48 to before 12.3X48-D101, 12.3X48-D105 custom affected 14.1X53 to before 14.1X53-D54 custom affected 15.1 to before 15.1R7-S7 custom affected 15.1X49 to before 15.1X49-D211, 15.1X49-D220 custom affected 16.1 to before 16.1R7-S8 custom affected 17.2 to before 17.2R3-S4 custom affected 17.3 to before 17.3R3-S8 custom affected 17.4 to before 17.4R2-S11, 17.4R3-S2 custom affected 18.1 to before 18.1R3-S10 custom affected 18.2 to before 18.2R2-S7, 18.2R3-S4 custom affected 18.3 to before 18.3R2-S4, 18.3R3-S2 custom and 6 more

Identifiers: CVE-2020-1631
CNA: juniper
Weakness (CWE): CWE-22 · CWE-73
Tags: Juniper Networks Junos OS
Path traversal
Published: 4 May 2020
Updated: 21 Oct 2025

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
8.8	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CNA (juniper)

CISA KEV Listed since 25 Mar 2022: known to be exploited.
EPSS 0.049, the 92nd percentile, on 9 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 4 May 2020. New records show when each source confirmed them.

Sources

References from the CNA

kb.juniper.net/JSA11021 confirm

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.