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CVE-2026-8137

Totolink X5000R formDdns sub_458E40 buffer overflow

HIGH
8.8
CVSS Score
Published: May 8, 2026 at 04:00 AM UTC
Updated: October 26, 2026 at 07:10 PM UTC
1 product affected across 1 vendorX5000R Firmware

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Severity
HIGH8.8
Exploit prediction
EPSS 0.5%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/361926
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/361926/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/808863
ExploitIssue Tracking
Source: cverecord
https://github.com/Kiciot/cve/issues/4
Product
Source: cverecord
https://www.totolink.net/

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-120CWE-119

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