What it is
CVE-2023-7311 is an unauthenticated BYTEVALUE Intelligent Flow Control Router Command Injection.
Vulnerability report
Exploited in the wild
High confidence
Not in CISA KEV
CVE-2023-7311
BYTEVALUE Intelligent Flow Control Router Command Injection
BYTEVALUE / Flow Control Router · *
- Severity
- CVSS 9.3 · Critical
- Confidence
- High
- Exploit status
- Exploited in the wild
- EPSS
- 1.9%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
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?
BYTEVALUE / Flow Control Router *.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
BYTEVALUE Intelligent Flow Control Router Command Injection
BYTEVALUE Intelligent Flow Control Router contains a command injection vulnerability via the /goform/webRead/open endpoint. The `path` parameter is not properly validated and is echoed into a shell context, allowing an attacker to inject and execute arbitrary shell commands on the device.
Successful exploitation can lead to writing backdoors, privilege escalation on the host, and full compromise of the router and its management functions. VulnCheck has observed this vulnerability being targeted by the RondoDox botnet campaign.
Vendor
Product
Affected
Status
BYTEVALUE (Luoyang Baiwei Intelligent Technology Co., Ltd.)
Affected
Flow Control Router
*
Affected
- Published
- 15 Oct 2025
- Exploitation Reported
- 22 May 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-2023-7311
- Third-Party Advisory — vulncheck.com vulncheck.com · Third-Party Advisory https://www.vulncheck.com/advisories/bytevalue-intelligent-flow-contr...
- GitHub — adysec/nuclei_poc github.com · Exploit https://github.com/adysec/nuclei_poc/blob/49c283b2bbb244c071786a2b768...
- Exploit — isc.sans.edu isc.sans.edu · Exploit https://isc.sans.edu/diary/Exploit+against+Unnamed+Bytevalue+router+v...
- Exploit — blog.csdn.net blog.csdn.net · Exploit https://blog.csdn.net/zkaqlaoniao/article/details/134328873
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
A trusted third party reported exploitation.
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 | 2026-05-22 00:00 UTC |
Detection
Operational artifacts and observed signals
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Observed signals
- Request targets
- User-Agents
- Callback hosts
- 0
- 0
- 0
Request targets and User-Agents available in Pro. Callback host details available in 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
Potential damage if exploited. Separate from whether attackers are using it.
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
1.9%
Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.
Timeline
From disclosure to observed exploitation
-
00:00 UTC
Added to Previdian KEV Feed
High-confidence, third-party attested exploitation
-
01:19 UTC
CVE published
Vulnerability disclosed publicly
-
20:19 UTC
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.
- 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-2023-7311
Sample API response{
"cve_id": "CVE-2023-7311",
"confidence": "High",
"cvss_score": 9.3,
"cvss_estimated": false,
"epss_score": 0.01858,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}