Patchfirst
CVE-2026-40615 Critical · 9.1 EPSS 0.7%

A stack-based buffer overflow vulnerability exists in the boa formParentControl deviceName functionality of X2000R…

totolink · Totolink

Summary

A stack-based buffer overflow in the boa web server's formParentControl deviceName functionality of the Totolink X2000R router allows an attacker to overflow a stack buffer. An attacker who can send an authenticated, specially crafted HTTP request can achieve arbitrary code execution, and no user interaction is required.

Official description · NVD

A stack-based buffer overflow vulnerability exists in the boa formParentControl deviceName functionality of X2000R (version(s): 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 this vulnerability.

Breakdown
19.2 / 100
Exploited
Not confirmed
Reports
0
Tactics
0/15

Disclosed on 20 Oct 2026. No public exploit code or confirmed exploitation is recorded.

techniques

No techniques linked

No ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.

What security researchers reported

Not named in any threat report yet

Also mentioned in 6 community threat pulses (AlienVault OTX)

Weaker evidence

Pulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.

References

1 link, grouped by NVD tag
↑ ↓ chooseEnter openEsc close