CVE-2023-27062Public exploitNetwork attack vector

Unauthenticated service crash via unchecked gotoUrl copy

Published Mar 13, 2023 · Updated Feb 27, 2025

Buffer overflow in Tenda W15E firmware 15.11.0.14 allows remote attackers to crash the HTTP service via a crafted portal request. The formPortalAuth function in /bin/httpd passes the gotoUrl request parameter to strcpy without checking its length, overrunning the destination buffer. No authentication or user interaction is required, and the demonstrated consequence is interruption of the device's HTTP service.

CVSS severity7.5
High
EPSS probability0.90%
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 W15E firmware 15.11.0.14 allows remote attackers to crash the HTTP service via a crafted portal request. The formPortalAuth function in /bin/httpd passes the gotoUrl request parameter to strcpy without checking its length, overrunning the destination buffer. No authentication or user interaction is required, and the demonstrated consequence is interruption of the device's HTTP service.

The record

CVE
CVE-2023-27062
Published
Mar 13, 2023
Updated
Feb 27, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 2025Record 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

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1499.004Application or System Exploitation

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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