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CVE-2026-31160· NVD / CVE Program· CNA mitre

An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the provide

An issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the provider parameter to /cgi-bin/cstecgi.cgi.

MediumCVSS 6.5 · v3.1—No exploit No fix recorded
Published
Apr 23, 2026
Updated
Jun 17, 2026
EPSS
0.7% · 50th percentile
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Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CISA SSVC decision

Exploitation
proof of concept
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Affected systems

VendorProduct
totolinka3300r firmware
totolinka3300r

Affected versions

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

  • totolink a3300r firmware17.0.0cu.557_b20221024

Same product

totolink: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-52046Totolink A3300R V17.0.0cu.596_B20250515 was found to contain a command injection vulnerability in the sub_4197C0 function via the mac and de
    41Plan
  • CVE-2024-24329TOTOLINK A3300R V17.0.0cu.557_B20221024 was discovered to contain a command injection vulnerability via the enable parameter in the setPortF
    41Plan
  • CVE-2024-24328TOTOLINK A3300R V17.0.0cu.557_B20221024 was discovered to contain a command injection vulnerability via the enable parameter in the setMacFi
    41Plan
  • CVE-2024-24333TOTOLINK A3300R V17.0.0cu.557_B20221024 was discovered to contain a command injection vulnerability via the desc parameter in the setWiFiAcl
    40Plan
  • CVE-2024-24332TOTOLINK A3300R V17.0.0cu.557_B20221024 was discovered to contain a command injection vulnerability via the url parameter in the setUrlFilte
    40Plan
  • CVE-2024-24325TOTOLINK A3300R V17.0.0cu.557_B20221024 was discovered to contain a command injection vulnerability via the enable parameter in the setParen
    40Plan

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.

No credits in the CNA record.

Variant candidates

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

  • CVE-2025-52046280 days apartTotolink A3300R V17.0.0cu.596_B20250515 was found to contain a command injection vulnerability in the sub_4197C0 function via the mac and de
    41Plan
  • CVE-2026-311750 days apartAn issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the stunEna
    39Monitor
  • CVE-2026-3117014 days apartAn issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the stun-pa
    39Monitor
  • CVE-2026-311620 days apartAn issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the ttlWay
    26Monitor
  • CVE-2026-311760 days apartAn issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the stun_us
    26Monitor
  • CVE-2026-311790 days apartAn issue was discovered in ToToLink A3300R firmware v17.0.0cu.557_B20221024 allowing attackers to execute arbitrary commands via the stunPor
    26Monitor

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.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')

CVSS vector

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

nvd-secondary

Attack context

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

ATT&CK techniques

—

Change log

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

All records