CVE-2026-8137: Totolink X5000R formDdns sub_458E40 buffer overflow

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-08 · updated 2026-10-26
Weakness: CWE-119

Description

A vulnerability has been found in Totolink X5000R 9.1.0u.6369_B20230113. This vulnerability affects the function sub_458E40 of the file /boafrm/formDdns. The manipulation of the argument submit-url leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used.

Affected products

TOTOLINK X5000R: 9.1.0u.6369_B20230113

References

https://github.com/Kiciot/cve/issues/4
https://vuldb.com/submit/808863
https://vuldb.com/vuln/361926
https://vuldb.com/vuln/361926/cti
https://www.totolink.net/

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