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CVE-2024-4112· NVD / CVE Program· CNA VulDB

Tenda TX9 SetVirtualServerCfg sub_42CB94 stack-based overflow

A vulnerability classified as critical has been found in Tenda TX9 22.03.02.10. This affects the function sub_42CB94 of the file /goform/SetVirtualServerCfg. The manipulation of the argument list leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-261855. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

HighCVSS 8.8 · v3.1—No exploit No fix recorded
Published
Apr 24, 2024
Updated
Jun 17, 2026
EPSS
1.7% · 76th percentile
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Action score

36

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 1.7%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
8.8
CNA · VulDB
8.8
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
tendatx9 pro firmware
tendatx9 pro

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • tenda tx9 pro firmware22.03.02.10

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.

  • Tenda TX9

    • 22.03.02.10affected

Same product

tenda: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-29592Tenda TX9 Pro 22.03.02.10 devices allow OS command injection via set_route (called by doSystemCmd_route).
    45Plan
  • CVE-2022-29591Tenda TX9 Pro 22.03.02.10 devices have a SetNetControlList buffer overflow.
    39Monitor
  • CVE-2024-4114Tenda TX9 PowerSaveSet sub_42C014 stack-based overflow
    35Monitor
  • CVE-2024-4113Tenda TX9 SetSysTimeCfg sub_42D4DC stack-based overflow
    35Monitor
  • CVE-2024-4111Tenda TX9 SetLEDCfg sub_42BD7C stack-based overflow
    35Monitor
  • CVE-2022-38510Tenda_TX9pro V22.03.02.10 was discovered to contain a buffer overflow via the component httpd/SetNetControlList.
    31Monitor

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.

Variant candidates

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

  • CVE-2024-41110 days apartTenda TX9 SetLEDCfg sub_42BD7C stack-based overflow
    35Monitor
  • CVE-2024-41130 days apartTenda TX9 SetSysTimeCfg sub_42D4DC stack-based overflow
    35Monitor
  • CVE-2024-41140 days apartTenda TX9 PowerSaveSet sub_42C014 stack-based overflow
    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.

—

Bug bounty scope

No known public program.

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

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-121 · Stack-based Buffer Overflow

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

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

All records