CVE-2026-19846

TOTOLINK A800R firewall.so cstecgi.cgi setUrlFilterRules stack-based overflow

HIGH
8.8
CVSS Score
Published: August 14, 2026 at 05:15 PM UTC
Updated: August 14, 2026 at 07:26 PM UTC
2 products affected across 1 vendorA800R FirmwareA800R

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Severity
HIGH8.8
Exploit prediction
EPSS 0.9%
SSVC
PoC

Description

A vulnerability was identified in TOTOLINK A800R 4.1.2cu.5137_B20200730. This impacts the function setUrlFilterRules of the file /cgi-bin/cstecgi.cgi of the component firewall.so. The manipulation of the argument url leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit is publicly available and might 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 (6)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/389982
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/389982/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-19846
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/869456
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-121CWE-119

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