CVE-2026-19813CWE-119CWE-121

CVE-2026-19813

High · published August 14, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
57.9
In the wild
Unconfirmed
What it is

A security vulnerability has been detected in TOTOLINK A800R 4.1.2cu.5137_B20200730. This impacts the function setMacFilterRules of the file /cgi-bin/cstecgi.cgi of the component firewall.so. Such manipulation of the argument Comment leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.7 · 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
EPSS
0.00854 · 57.9th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-121 · Stack-based Buffer Overflow
Published
2026-08-14T12:17Z
References (6)
https://github.com/panda666-888/vuls/blob/main/totolink/a800r/setMacFilterRules.md · [email protected]https://vuldb.com/cve/CVE-2026-19813 · [email protected]https://vuldb.com/submit/869430 · [email protected]https://vuldb.com/vuln/389949 · [email protected]https://vuldb.com/vuln/389949/cti · [email protected]https://www.totolink.net/ · [email protected]
EPSS history
Timeline
  • 14 AUG 08:00Z
    TOTOLINK A800R firewall.so cstecgi.cgi setMacFilterRules stack-based overflow
    cvelistv5