Summary
generated automatically from NVD dataCVE-2026-42019 is a stack-based buffer overflow (CWE-121) in the boa web server's formIpv6Setup pppoe functionality on the Totolink X2000R, firmware TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327. The overflow is triggered through the pppoe_dns1 parameter by a specially crafted HTTP request from an authenticated attacker, and it can lead to arbitrary code execution. It has a CVSS v3.1 score of 9.1 (CRITICAL).
NVD description
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.
EPSS · FIRST.org
0.74%probability of exploitation in the next 30 days
Higher than 53% of scored CVEs
EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-21, recomputed daily by FIRST.org.
In-depth analysis on cveo.tech
We've published a detailed analysis of this CVE — exploitation, IOCs and mitigation.
CVSS v3.1 Score
Information
- Published
- 20 oct. 2026
- Updated
- 20 oct. 2026
- Status
- Received
- Source
- talos-cna@cisco.com
Weaknesses (CWE)
Similar CVEs
Other vulnerabilities of type CWE-121
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