CVE.org (no NVD analysis yet)· CNA juniper

CVE-2026-102059: Junos OS and Junos OS Evolved: EX Series, SRX Series, QFX Series: A rogue DHCP server causes root-level command execution when the phone-home client processes…

HighCVSS 8.7 · v4.0—No exploit No fix recorded

Noroxi assessment

Priority: Monitor (action score 35/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 3.8% (FIRST EPSS); higher than 90.4% of all records.
Someone on the same network segment can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in the phone-home daemon (phcd) of Juniper Networks Junos OS and Junos OS Evolved on EX Series, SRX Series, and QFX Series allows an adjacent unauthenticated attacker to execute arbitrary commands with root privileges via a rogue DHCP server.

EUVD-2026-101385

Published: Oct 14, 2026
Updated: Oct 16, 2026
EPSS: 3.8% · 90th percentile
CWE: CWE-78

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 34 / 40 · 8.7 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 3.8%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · juniper: 8.8; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

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Versions reported by the vendor

Affected version ranges reported by the assigning authority (juniper). Independent of NVD's CPE analysis and usually ahead of it.

Juniper Networks Junos OS
- before 23.2R2-S7.7affected
- 23.4 and later · before 23.4R2-S8.13affected
- 24.2 and later · before 24.2R2-S5.5affected
- 24.4 and later · before 24.4R2-S5affected
- 25.2 and later · before 25.2R2-S2affected
- 25.4 and later · before 25.4R1-S3affected
- 26.2 and later · before 26.2R1-S2affected
Juniper Networks Junos OS Evolved
- 23.4X100affected
- before 23.2R2-S7.7-EVOaffected
- 23.4 and later · before 23.4R2-S8.11-EVOaffected
- 24.2 and later · before 24.2R2-S5.6-EVOaffected
- 24.4 and later · before 24.4R2-S5-EVOaffected
- 25.2 and later · before 25.2R2-S2-EVOaffected
- 25.4 and later · before 25.4R1-S3-EVOaffected
- 26.2 and later · before 26.2R1-S2-EVOaffected
- 25.2X100 and later · before 25.2X100-D35-EVOaffected
- 25.4X300 and later · before 25.4X300-D40-EVOaffected

Same product

juniper networks: all records

Other highest-scoring records for the same primary product.

CVE-2026-101983Junos OS and Junos OS Evolved: An attacker causes remote code execution when J-Web virtual-domain is configured
37Monitor
CVE-2026-101982Junos OS and Junos OS Evolved: A EVPN peer causes an rpd crash or root-level compromise when EVPN-VPWS is used
37Monitor
CVE-2026-101954Junos OS and Junos OS Evolved: Unauthenticated network access causes full device takeover when J-Web is enabled
37Monitor

Published before and after this one in the same product

← EarlierCVE-2026-102057Oct 14, 2026 · Junos OS: An attacker causes DHCP service disruption during DHCP client operation
34Monitor
← EarlierCVE-2026-102058Oct 14, 2026 · Junos OS and Junos OS Evolved: An attacker causes a bfdd denial of service when BFD is enabled
28Monitor
Later →CVE-2026-102060Oct 14, 2026 · Junos OS and Junos OS Evolved: MX Series, ACX Series: An attacker causes a routing daemon crash when multicast lawful intercept is used
28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-1020790 days apartJunos OS: MX Series: Missing Authorization for specific 'request' CLI commands allows command injection
34Monitor

Not on record for this CVE: patch commit or PR link · researcher credit · public bounty program.

Technical details

Attack conditions

Someone on the same network segment can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Adjacent
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: X

Weakness class (CWE)

CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS vector

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:C/RE:M/U:X

nvd-secondary

Root cause

User input is inserted as text into a shell command. The shell may interpret special characters in the input as part of the command.

The bug in code

The whole CWE-78 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const host = req.body.host;
2exec("ping -c 1 " + host, onResult);

Fixed

1const host = req.body.host;
2if (!/^[a-z0-9.-]{1,253}$/i.test(host)) return res.sendStatus(400);
3execFile("ping", ["-c", "1", host], onResult);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

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Change log

SSVC exploitation— → noneOct 16, 2026, 5:07 AM UTC
Exploit maturity— → noneOct 14, 2026, 6:08 PM UTC
CVSS8.8 → 8.7Oct 14, 2026, 6:07 PM UTC

For records you follow, these changes also arrive as notifications. →

References

supportportal.juniper.net/JSA112187

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records