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Advisory severityCritical9.8Juniper Networks Updated

Critical [CVE-2026-101983] Stack-based Buffer Overflow vulnerability in the httpd process of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network attacker to cause remote code execution and denial of service via a J-Web virtual-domain configured

This critical-severity Juniper Networks advisory covers CVE-2026-101983 affecting Junos OS, Junos OS Evolved.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-101983 Source published Source updated

VulniPulse record published Record updated

CVE-2026-101983
Affected products & platforms
Juniper NetworksJunosJunos OS Evolved
Open source advisory

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Summary

A Stack-based Buffer Overflow vulnerability in the httpd process of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network attacker to cause remote code execution and denial of service via a J-Web virtual-domain configured.

Affected versions
  • Junos OS 23.4 before 23.4R2-S8.13
  • Junos OS 24.2 before 24.2R2-S5.5
  • Junos OS 24.4 before 24.4R2-S5
  • Junos OS 25.2 before 25.2R2-S2
  • Junos OS 25.4 before 25.4R1-S3
  • Junos OS 26.2 before 26.2R1-S2
  • Junos OS Evolved 23.4 before 23.4R2-S8.11-EVO
  • Junos OS Evolved 24.2 before 24.2R2-S5.6-EVO
  • Junos OS Evolved 24.4 before 24.4R2-S5-EVO
  • Junos OS Evolved 25.2 before 25.2R2-S2-EVO
  • Junos OS Evolved 25.4 before 25.4R1-S3-EVO
  • Junos OS Evolved 26.2 before 26.2R1-S2-EVO

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Fixed versions
  • 23.4R2-S8.13
  • 24.2R2-S5.5
  • 24.4R2-S5
  • 25.2R2-S2
  • 25.4R1-S3
  • 26.2R1-S2
  • 23.4R2-S8.11-EVO
  • 24.2R2-S5.6-EVO
  • 24.4R2-S5-EVO
  • 25.2R2-S2-EVO
  • 25.4R1-S3-EVO
  • 26.2R1-S2-EVO

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Mitigation

Upgrade to a fixed release: 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S5, 25.2R2-S2, 25.4R1-S3, 26.2R1-S2. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Discussion(0)

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