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Noroxi
CVE-2026-9384· NVD / CVE Program· CNA VulDB

Totolink A8000RU Web Management cstecgi.cgi setDiagnosisCfg os command injection

Noroxi assessment

Priority: Monitor (action score 36/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 3.2% (FIRST EPSS); higher than 88% of all records.
  • 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.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

A vulnerability was found in Totolink A8000RU 7.1cu.643_b20200521. This vulnerability affects the function setDiagnosisCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument ip results in os command injection. The attack can be executed remotely. The exploit has been made public and could be used.

HighCVSS 8.9 · v4.0—No exploit No fix recorded
Published
May 24, 2026
Updated
Jul 23, 2026
EPSS
3.3% · 88th percentile

Report tools

JSON

Action score

36

Monitor

Low priority for now.

CVSS
35 / 40 · 8.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.3%

CISA SSVC decision

Exploitation
proof of concept
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulDB
9.3
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-9384

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.

  • Totolink A8000RU

    • 7.1cu.643_b20200521affected

Same product

totolink: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-9478Totolink A8000RU Web Management cstecgi.cgi setParentalRules os command injection
    36Monitor
  • CVE-2026-9477Totolink A8000RU Web Management cstecgi.cgi setAccessDeviceCfg os command injection
    36Monitor
  • CVE-2026-9476Totolink A8000RU Web Management cstecgi.cgi setPasswordCfg os command injection
    36Monitor
  • CVE-2026-9475Totolink A8000RU Web Management cstecgi.cgi setIpQosRules os command injection
    36Monitor
  • CVE-2026-9458Totolink A8000RU Web Management cstecgi.cgi setWanCfg os command injection
    36Monitor
  • CVE-2026-9457Totolink A8000RU Web Management cstecgi.cgi UploadFirmwareFile os command injection
    36Monitor

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.

Variant candidates

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

  • CVE-2026-93850 days apartTotolink A8000RU Web Management cstecgi.cgi setTracerouteCfg os command injection
    36Monitor
  • CVE-2026-93860 days apartTotolink A8000RU Web Management cstecgi.cgi setLanguageCfg os command injection
    36Monitor
  • CVE-2026-94050 days apartTotolink A8000RU Web Management cstecgi.cgi setGameSpeedCfg os command injection
    36Monitor
  • CVE-2026-94060 days apartTotolink A8000RU Web Management cstecgi.cgi setRemoteCfg os command injection
    36Monitor
  • CVE-2026-94070 days apartTotolink A8000RU Web Management cstecgi.cgi setFirewallType os command injection
    36Monitor
  • CVE-2026-94080 days apartTotolink A8000RU Web Management cstecgi.cgi setStaticDhcpRules os command injection
    36Monitor

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
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
X

Weakness class (CWE)

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

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records