Is CVE-2023-7330 actively exploited?

Yes. Previdian tracks CVE-2023-7330 as a known exploited vulnerability. Confidence is high.

What exploitation activity has Previdian observed?

Previdian has not yet recorded sensor-observed exploitation attempts for CVE-2023-7330. Our sensors continue to monitor for activity targeting this CVE.

No. CVE-2023-7330 is not currently listed in CISA KEV.

Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2023-7330

Q: Which versions are affected?

CVE-2023-7330 affects Beijing Star-Net Ruijie Network Technology NBR Series Routers. Reported affected version: 0.

NBR Series Routers Arbitrary File Access

Beijing Star-Net Ruijie Network Technology / NBR Series Routers · 0

View live feed Monitor via API Watch CVE-2023-7330

Severity: CVSS 9.3 · Critical
Confidence: High
Exploit status: Exploited in the wild
EPSS: 0.6%
First observed: —
Last observed: —

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2023-7330 is an unauthenticated vulnerability affecting Beijing Star-Net Ruijie Network Technology NBR Series Routers. Ruijie NBR series routers contain an unauthenticated arbitrary file upload vulnerability via...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is high. Also confirmed by third-party sources.

Who is affected?

Beijing Star-Net Ruijie Network Technology / NBR Series Routers 0.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Ruijie NBR series routers contain an unauthenticated arbitrary file upload vulnerability via /ddi/server/fileupload.php

Ruijie NBR series routers contain an unauthenticated arbitrary file upload vulnerability via /ddi/server/fileupload.php. The endpoint accepts attacker-supplied values in the name and uploadDir parameters and saves the provided multipart file content without adequate validation or sanitization of file type, path, or extension.

A remote attacker can upload a crafted PHP file and then access it from the web root, resulting in arbitrary code execution in the context of the web service. Exploitation evidence was observed by the Shadowserver Foundation on 2025-01-14 UTC.

Vendor Product Affected Status

Beijing Star-Net Ruijie Network Technology Co., Ltd. NBR Series Routers 0 Affected

View vendor advisory

Published: 24 Nov 2025
Exploitation Reported: 29 Aug 2026
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2023-7330
Third-Party Advisory — vulncheck.com vulncheck.com · Third-Party Advisory https://www.vulncheck.com/advisories/ruijie-networks-nbr-routers-unau...
GitHub — projectdiscovery/nuclei-templates github.com · Exploit https://github.com/projectdiscovery/nuclei-templates/blob/main/http/v...
Exploit — cn-sec.com cn-sec.com · Exploit https://cn-sec.com/archives/1995366.html
Exploit — cnblogs.com cnblogs.com · Exploit https://www.cnblogs.com/Domren/articles/19093295
Exploit — rfk0z.github.io rfk0z.github.io · Exploit https://rfk0z.github.io/posts/Ruijie-NBR-router-fileupload-php-arbitr...

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

The Shadowserver

Recorded 29 Aug 2026

Independent exploitation attestation added to the Previdian record.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access

Source	Added
The Shadowserver First	2026-08-29 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v4.0

9.3 Critical

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS

0.6%

Weaknesses

Unrestricted Upload of File with Dangerous Type CWE-434

Timeline

From disclosure to observed exploitation

29 Aug 2026
Added to Previdian KEV Feed

High-confidence, third-party attested exploitation
24 Nov 2025
CVE published

Vulnerability disclosed publicly
24 Nov 2025
CVE ID reserved

Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2023-7330

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2023-7330",
  "confidence": "High",
  "cvss_score": 9.3,
  "cvss_estimated": false,
  "epss_score": 0.00617,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}