CVE-2024-51313Network attack vector

Unauthenticated memory corruption via SetVirtualServerCfg requests

Published Jul 20, 2026 · Updated Jul 20, 2026

Stack-based buffer overflow in Tenda TX9 firmware 22.03.02.20 allows remote attackers to corrupt memory via SetVirtualServerCfg requests. The published record locates the flaw in sub_42EA38 but does not disclose the triggering parameter or the exact unsafe operation on request data. Unauthenticated network reachability is established, while primary sources do not demonstrate whether exploitation causes a crash or code execution.

CVSS severity9.8
Critical
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Tenda TX9 firmware 22.03.02.20 allows remote attackers to corrupt memory via SetVirtualServerCfg requests. The published record locates the flaw in sub_42EA38 but does not disclose the triggering parameter or the exact unsafe operation on request data. Unauthenticated network reachability is established, while primary sources do not demonstrate whether exploitation causes a crash or code execution.

The record

CVE
CVE-2024-51313
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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