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

CVE-2026-103403: Session Smart Router and Session Smart Conductor: Unvalidated input causes arbitrary file deletion and command execution when deleting audit rules

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: 1.1% (FIRST EPSS); higher than 67.7% of all records.
Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

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 AccessManager in Juniper Networks Session Smart Router and Session Smart Conductor allows an attacker to perform arbitrary file deletion and arbitrary command execution via the deletion of an audit rule.

HighCVSS 8.8 · v3.1—No exploit No fix recorded

EUVD-2026-112218

Published: Oct 28, 2026
Updated: Oct 28, 2026
EPSS: 1.1% · 67th percentile
CWE: CWE-78

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 35 / 40 · 8.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 1.1%

CNA vs NVD score

NVD: 8.8
CNA · juniper: 8.8; agree

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.

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Noroxi analysis

What does it mean in your environment?

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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 Session Smart Conductor
- before 7.0.5affected
- 7.1.0 and later · before 7.1.7affected
- 7.2.0 and later · before 7.2.3affected
Juniper Networks Session Smart Router
- before 7.0.5affected
- 7.1.0 and later · before 7.1.7affected
- 7.2.0 and later · before 7.2.3affected

Same product

juniper networks: all records

Other highest-scoring records for the same primary product.

CVE-2024-2973Session Smart Router(SSR): On redundant router deployments API authentication can be bypassed
40Plan
CVE-2026-103409Session Smart Router: An attacker obtains administrative privileges when an unauthenticated internal endpoint is accessed
39Monitor
CVE-2025-21589Session Smart Router, Session Smart Conductor, WAN Assurance Router: API Authentication Bypass vulnerability
37Monitor

Published before and after this one in the same product

← EarlierCVE-2026-103401Oct 28, 2026 · Session Smart Router and Session Smart Conductor: An attacker can overwrite arbitrary files as root
35Monitor
← EarlierCVE-2026-103402Oct 28, 2026 · Session Smart Router and Session Smart Conductor: Lack of integrity verification in cache files causes arbitrary code execution and privilege escalation
35Monitor
Later →CVE-2026-103405Oct 28, 2026 · Session Smart Router and Session Smart Conductor: Unsanitized input causes HTTP response splitting
23Monitor

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).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

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

CVE-2026-1060790 days apartSession Smart Router and Session Smart Conductor: Improper validation of a field causes privilege escalation when updating the YANG configuration
35Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

CVE-2026-1034090 days apartSession Smart Router: An attacker obtains administrative privileges when an unauthenticated internal endpoint is accessed
39Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-26-1426 · Oct 30, 2026(Juniper Networks Güvenlik Bildirimi)

All national notices →

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

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

CVSS vector

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

nvd-primary

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

Exploit maturity— → noneOct 28, 2026, 6:07 PM UTC

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

References

supportportal.juniper.net/JSA112183

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

All records