CVE-2026-24113Public exploitNetwork attack vector

Memory corruption via unchecked getMibPrefix sprintf

Published Mar 2, 2026 · Updated Mar 2, 2026

Buffer overflow in Tenda W20E firmware 15.11.0.6 allows remote attackers to corrupt memory via crafted Wi-Fi filter input. The formWifiFilterRulesModify handler passes attacker-controlled nptr to getMibPrefix, where sprintf concatenates it without validating the destination size. No authentication or user interaction is required, but public evidence does not establish whether the overflow causes a crash or code execution.

CVSS severity9.8
Critical
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Tenda W20E firmware 15.11.0.6 allows remote attackers to corrupt memory via crafted Wi-Fi filter input. The formWifiFilterRulesModify handler passes attacker-controlled nptr to getMibPrefix, where sprintf concatenates it without validating the destination size. No authentication or user interaction is required, but public evidence does not establish whether the overflow causes a crash or code execution.

The record

CVE
CVE-2026-24113
Published
Mar 2, 2026
Updated
Mar 2, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 2, 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
9.8NVDCVSS: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 exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1190Exploit Public-Facing Application

Public exploit references

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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