CVE-2026-75013Public exploitNetwork attack vector

Authenticated service crash via setWizardCfg null dereference

Published Aug 17, 2026 · Updated Aug 18, 2026

Null pointer dereference in TOTOLINK EX1200L 9.3.5u.6146_B20201023 allows remote authenticated users to crash cstecgi.cgi via setWizardCfg. Public records identify setWizardCfg in /cgi-bin/cstecgi.cgi as the crash locus, but they do not disclose which request field is dereferenced without a NULL check before the fault occurs. The published CVSS vectors require low privileges rather than unauthenticated access, and the stated impact is availability loss from a web-service or device crash.

CVSS severityUnavailable
Unscored
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in TOTOLINK EX1200L 9.3.5u.6146_B20201023 allows remote authenticated users to crash cstecgi.cgi via setWizardCfg. Public records identify setWizardCfg in /cgi-bin/cstecgi.cgi as the crash locus, but they do not disclose which request field is dereferenced without a NULL check before the fault occurs. The published CVSS vectors require low privileges rather than unauthenticated access, and the stated impact is availability loss from a web-service or device crash.

The record

CVE
CVE-2026-75013
Published
Aug 17, 2026
Updated
Aug 18, 2026
Vendor
TOTOLINK
Product
EX1200L
Classifications
CWE-476, CWE-404, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=9.3.5u.6146_B20201023

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TOTOLINK · EX1200Lversion=9.3.5u.6146_B20201023

Published CVSS scores

6.5VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:X/RC:R
7.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
6.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:X/RC:R
6.8VulDBAV:N/AC:L/Au:S/C:N/I:N/A:C/E:POC/RL:ND/RC:UR

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
CWE-404Denial of Service
T1499Endpoint Denial of Service

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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