Advisory severityHigh8.8Juniper Networks

High [CVE-2026-102052] Junos OS and Junos OS Evolved: An attacker causes jdhcpd to crash when the DHCPv4 local-client feature is used

This high-severity Juniper Networks advisory covers CVE-2026-102052 affecting Junos OS Evolved.

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

CVE-2026-102052 Source published Oct 15, 2026Source updated Oct 17, 2026

VulniPulse record published Oct 15, 2026Record updated Oct 17, 2026

CVE-2026-102052

Affected products & platforms

Juniper NetworksJunosJunos OS Evolved

Open source advisory

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Summary

A Stack-based Buffer Overflow vulnerability in the jdhcpd process of Juniper Networks Junos OS and Junos OS Evolved platforms allows an adjacent unauthenticated attacker to cause denial of service or execute arbitrary code with root privileges via a malformed DHCPv4 server response when the DHCPv4 local-client feature is used.

Affected versions

Junos OS before 23.2R2-S7.7
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 before 23.2R2-S7.7-EVO
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

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

Fixed versions

23.2R2-S7.7
23.4R2-S8.13
24.2R2-S5.5
24.4R2-S5
25.2R2-S2
25.4R1-S3
26.2R1-S2
23.2R2-S7.7-EVO
23.4R2-S8.11-EVO
24.2R2-S5.6-EVO
24.4R2-S5-EVO
25.2R2-S2-EVO

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

Mitigation

Upgrade to a fixed release: 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S5, 25.2R2-S2, 25.4R1-S3. 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

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Juniper Networks
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-102052 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-102052NVD CVE.org MITRE

Official resources

Junos OS software downloads & install/upgrade (target: 23.2R2-S7.7 / 23.4R2-S8.13 / 24.2R2-S5.5)
Official documentation
This advisory names 23.2R2-S7.7 / 23.4R2-S8.13 / 24.2R2-S5.5 as the first fixed releases — official upgrade documentation for Junos OS on SRX / MX / EX / QFX.
Junos OS release & EOL / support dates
Release notes
Confirm your train is still supported and pick a fixed maintenance release.
Juniper Security Advisories portal
Official documentation
Canonical Juniper SIRT advisory portal — search here for the full JSA text and revisions.

Discussion(0)

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