Vulnary
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Critical· 9.8

CVE-2024-51313

A critical stack overflow flaw exists in the Tenda TX9 router firmware version V22.03.02.20. The bug is triggered by the /goform/SetVirtualServerCfg function and could let an attacker crash or take control of the device.

publishedJul 20, 2026
last modifiedJul 21, 2026
sourcesNVD
severity · cvss
9.8
critical · how bad it is
exploitation · epss
<1%
34th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Sep 4, 2026

No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.

01

Who is affected

The flaw affects the Tenda TX9 router model running firmware version V22.03.02.20. Users of this specific firmware are at risk.

02

Real-world impact

An attacker could exploit the stack overflow to crash the router or execute arbitrary code, potentially taking control of the device and compromising network traffic.

03

Why this severity

The CVSS score of 9.8 reflects the vulnerability’s high impact: it can be triggered remotely without authentication, with no user interaction, and can lead to full compromise of confidentiality, integrity, and availability.

04

What to do about it

no official fix yet
interim mitigations
  • Avoid using the affected firmware version; if possible, disable the /goform/SetVirtualServerCfg feature or the virtual server functionality.
  • Monitor the vendor for firmware updates that address the issue.

No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.

No fix documented in sources.

05

Timeline

06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
07

References & advisories

(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →