CVE-2026-31170Public exploitNetwork attack vector

Remote command execution via unsanitized stun-pass

Published Apr 9, 2026 · Updated Apr 9, 2026

Command injection in TOTOLINK A3300R firmware 17.0.0cu.557_B20221024 allows remote attackers to execute commands via stun-pass. The setTr069Cfg handler passes the request's stun-pass value through Uci_Set_Str into an sprintf-built command that CsteSystem sends to execv. A crafted HTTP request can invoke command substitution on the router; the published record does not state whether authentication is required.

CVSS severityUnavailable
Unscored
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in TOTOLINK A3300R firmware 17.0.0cu.557_B20221024 allows remote attackers to execute commands via stun-pass. The setTr069Cfg handler passes the request's stun-pass value through Uci_Set_Str into an sprintf-built command that CsteSystem sends to execv. A crafted HTTP request can invoke command substitution on the router; the published record does not state whether authentication is required.

The record

CVE
CVE-2026-31170
Published
Apr 9, 2026
Updated
Apr 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1059.004
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 9, 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 privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

No CVSS assessment is available in this record.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1059.004Unix Shell

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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