CVE-2026-7243 | THREATINT

Description

A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setRadvdCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument maxRtrAdvInterval leads to os command injection. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

PUBLISHED Reserved 2026-04-27 | Published 2026-04-28 | Updated 2026-04-28 | Assigner VulDB

CRITICAL: 9.3CVSS: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

CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

CRITICAL: 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

10.0AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Problem types

OS Command Injection

Command Injection

Product status

7.1cu.643_b20200521

affected

Timeline

2026-04-27:	Advisory disclosed
2026-04-27:	VulDB entry created
2026-04-27:	VulDB entry last update

Credits

LtzHust2 (VulDB User) reporter

References

vuldb.com/vuln/359850 (VDB-359850 | Totolink A8000RU CGI cstecgi.cgi setRadvdCfg os command injection) vdb-entry technical-description

vuldb.com/vuln/359850/cti (VDB-359850 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/803266 (Submit #803266 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection) third-party-advisory

github.com/...vuldb_new2/blob/main/A8000RU/vul_327/README.md exploit

www.totolink.net/ product

cve.org (CVE-2026-7243)

nvd.nist.gov (CVE-2026-7243)

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