PatchTheCEVCVE-2026-42023: Multiple stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup static network configurati
46
This month
CRITICAL 9.1
CVE-2026-42023 is a critical-severity flaw (CVSS 9.1) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Multiple stack-based buffer overflow vulnerabilities exist in the boa formIpv6Setup static network configuration 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 static_ipv6 parameter.
Why this priority
- Critical severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.1 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | High |
| User interaction | None |
| EPSS exploit chance | 0.8% (top 44%) |
| CISA exploited list | No |
| Weakness | CWE-121 |
| Published | 2026-10-20 |
| Last modified | 2026-10-23 |
Publisher (CNA): Talos
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Fedora 46 · rubygem-eventmachine · FIXED · 1.2.7-37.fc46 · FEDORA-2026-7194c202a2 · source
sudo dnf upgrade --advisory=FEDORA-2026-7194c202a2
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.