CVE-2026-42019CWE-121

CVE-2026-42019

Critical · published October 21, 2026

CVSS v3.1
9.1
EPSS
1%
Percentile
54.0
In the wild
Unconfirmed
What it is

Multiple stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup pppoe functionality of Totolink X2000R TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327. A specially crafted HTTP request can lead to arbitrary code execution. An attacker can make an authenticated HTTP request to trigger these vulnerabilities. This vulnerability concerns the pppoe_dns1 parameter.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00737 · 54.0th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-10-21T01:17Z
References (1)
https://talosintelligence.com/vulnerability_reports/TALOS-2026-2394 · [email protected]
EPSS history
Timeline
  • 22 OCT 03:32Z
    EPSS moved — → 1%
    epss
  • 20 OCT 20:25Z
    Multiple stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup pppoe functionality of Totolink X2000R…
    cvelistv5
  • 20 OCT 20:25Z
    Multiple stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup pppoe functionality of Totolink X2000R…
    cvelistv5