HOMEVULNERABILITIESCVE-2026-9405
CRITICAL

CVE-2026-9405

CWE-77Published: May 25, 2026· Updated: May 26, 2026

9.8
CVSS v3.1
EPSS:0.89%probability of exploitation in 30 daysPercentile:75.8th

Official Description

A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. This impacts the function setGameSpeedCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument enable results in os command injection. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks.

NVD Source

Technical Analysis

CVE-2026-9405 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

All References (5)

→
https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_337/README.md
→
https://vuldb.com/submit/813440
→
https://vuldb.com/vuln/365386
→
https://vuldb.com/vuln/365386/cti
→
https://www.totolink.net/

Quick Facts

CVE IDCVE-2026-9405
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-77
CISA KEVNo
EPSS (30d)0.89%
PublishedMay 25, 2026

Related CVEs (CWE-77)

CVE-2025-15379
10.0
CVE-2026-26068
9.9
CVE-2026-20186
9.9
CVE-2026-20147
9.9
CVE-2026-45663
9.9
CVE-2026-52806
KEV9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-9405 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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