CVE-2026-8137CWE-119CWE-120

Totolink X5000R formDdns sub_458E40 buffer overflow

High · published May 8, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
55.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
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
0.00792 · 55.8th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2026-05-08T04:00Z
EPSS history
Timeline
  • 08 MAY 04:00Z
    Totolink X5000R formDdns sub_458E40 buffer overflow
    cvelistv5