CVE-2026-9457

CRITICAL 9.8

Totolink A8000RU Web Management cstecgi.cgi UploadFirmwareFile os command injection

CVSS Score

9.8

EPSS Score

0.9%

EPSS Percentile

76th

A vulnerability was determined in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function UploadFirmwareFile of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. This manipulation of the argument FileName causes os command injection. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.

CWE	CWE-78 CWE-77
Vendor	totolink
Product	a8000ru
Published	May 25, 2026
Last Updated	May 26, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Totolink / A8000RU

7.1cu.643_b20200521

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/365438 vuldb.com: https://vuldb.com/vuln/365438/cti vuldb.com: https://vuldb.com/submit/813454 github.com: https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_343/README.md totolink.net: https://www.totolink.net/

Credits

🔍 LtzHust (VulDB User)