← Vulnerability feed

Vulnerability record · CVE-2026-19846 · published 14 August 2026

CVE-2026-19846: Memory buffer overflow vulnerability

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.

7.4 CVSS 4.0 High EPSS 0.85% · top 43.4% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow Deferred
7.4CVSS 4.0 base score, v2 9.0
0.85%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
14 Aug 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/panda666-888/vuls/blob/main/totolink/a800r/setUrlFilterRules.md
https://vuldb.com/cve/CVE-2026-19846
https://vuldb.com/submit/869456
https://vuldb.com/vuln/389982
https://vuldb.com/vuln/389982/cti
https://www.totolink.net/

Track CVE-2026-19846 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2026-8452Citrix NetScaler ADC and Gateway memory buffer overflow causes DoSCVE-2026-8452 is a memory buffer overflow (CWE-119) in Citrix NetScaler ADC and NetScaler Gateway that leads to unpredictable or erroneous behavior a…KEVEPSS 1.0%analysed8.8CVE-2009-3459Adobe Reader and Acrobat heap buffer overflow via crafted PDFAdobe Reader and Acrobat 7.x before 7.1.4, 8.x before 8.1.7, and 9.x before 9.2 contain a heap-based buffer overflow (CWE-122) triggered by a crafted…KEVEPSS 87%analysed9.8CVE-2008-4250Microsoft Windows Server service RPC path canonicalization buffer overflowThe Server service in multiple Windows versions fails to properly handle path canonicalization, allowing a crafted RPC request to overflow a buffer a…KEVEPSS 99%analysed8.8CVE-2025-31277Apple WebKit memory corruption via malicious web contentApple WebKit fails to handle memory correctly when processing crafted web content, leading to memory corruption across Safari, iOS, iPadOS, macOS, tv…KEVEPSS 1.6%analysed8.8CVE-2026-3910Google Chrome V8 improper implementation allows sandbox code executionChrome before 146.0.7680.75 contains an inappropriate implementation in the V8 JavaScript engine, classified as code injection and memory buffer over…KEVEPSS 1.0%analysed8.8CVE-2008-0015Microsoft DirectShow Video ActiveX Control Stack Buffer OverflowA stack-based buffer overflow in the CComVariant::ReadFromStream function in the Active Template Library (ATL) is reachable through the MPEG2TuneRequ…KEVEPSS 77%analysed7.8CVE-2026-20700Apple OS memory corruption allows arbitrary code executionA memory corruption flaw caused by improper state management affects iOS, iPadOS, macOS, tvOS, visionOS and watchOS. Apple states it is aware of a re…KEVEPSS 1.3%analysed8.8CVE-2025-14174Google Chrome ANGLE out-of-bounds memory access on MacChrome on macOS before 143.0.7499.110 contains an out-of-bounds memory access in the ANGLE graphics layer, classified as an out-of-bounds write (CWE-…KEVEPSS 22%analysed

Source: NIST National Vulnerability Database (record CVE-2026-19846), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.