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TI-2020-01580 Aliases CVE-2020-1626GHSA-5pv5-vwqw-425f

Junos OS Evolved: Denial of Service vulnerability in processing high rate of specific packets

Priority LOW 36Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

A vulnerability in Juniper Networks Junos OS Evolved may allow an attacker to cause a Denial of Service (DoS) by sending a high rate of specific packets to the device, resulting in a pfemand process crash. The pfemand process is responsible for packet forwarding on the device. By continuously sending the packet flood, an attacker can repeatedly crash the pfemand process causing a sustained Denial of Service. This issue can only be triggered by traffic sent to the device. Transit traffic does not cause this issue. This issue affects all version of Junos OS Evolved prior to 19.1R1-EVO.

Why it matters now

EPSS 0.01363 71st percentileScored 2026-11-07
Fix Fixed Junos OS Evolved (Juniper Networks): 19.1R1-EVO

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
JuniperJunos OS Evolvedbefore 19.1R1-EVO19.1R1-EVOPatch availableCNA
  • Junos OS Evolved VendorJuniper Affected before 19.1R1-EVO Fixed in 19.1R1-EVO Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:juniper:junos_os_evolved:18.3:r1:*:*:*:*:*:*18.3 r1VulnerableJuniper
  • cpe:2.3:o:juniper:junos_os_evolved:18.3:r1:*:*:*:*:*:* Versions 18.3 r1 Vulnerable ·Juniper

Remediation

  • Fix · CNA Junos OS Evolved (Juniper Networks) Fixed in 19.1R1-EVO

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Juniper Networks Junos OS Evolved 19.1R1-EVO

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2020-01578 Junos OS Evolved: objmon logs may leak sensitive informationPriority LOW 25
    • TI-2020-01576 Junos OS Evolved: EvoSharedObjStore may leak sensitive informationPriority LOW 25
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-1626
  2. 2026-10-03 Alias added: GHSA-5pv5-vwqw-425f

References

Advisory 2

  • TI-2026-17602 Junos OS Evolved: PTX Series: A vulnerability allows a unauthenticated, network-based attacker to execute code as root CVSS 4.0CRITICAL 9.3
  • TI-2026-17601 Junos OS and Junos OS Evolved: Configuration of a specific SSH option results in mgd crash CVSS 4.0MEDIUM 6.7
  • TI-2023-04136 Improper input validation in Juniper Junos OS CVSS 3.1HIGH 7.5
  • TI-2026-74215 Stack-based buffer overflow in Junos OS rpd triggered by BGP peers CVSS 4.0CRITICAL 9.3
  • TI-2026-74211 Authentication bypass in Juniper J-Web allows pre-auth CGI execution CVSS 4.0CRITICAL 9.3
  • TI-2021-00146 Junos OS and Junos OS Evolved: Upon receipt of a specific BGP FlowSpec message network traffic may be disrupted. CVSS 3.1CRITICAL 10.0
See all 249 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences