Patchfirst
CVE-2026-9660 Critical · 9.1 EPSS 0.5%

Multiple exploitable stack-based buffer overflow vulnerabilities exist in the boa formFilter functionality of X2000R…

totolink · Totolink

Summary

A stack-based buffer overflow in the formFilter functionality of the boa web server on the Totolink X2000R router (firmware TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327) is triggered via the vpnPassword parameter. An attacker with high-privilege authentication can send a specially crafted authenticated HTTP request to achieve arbitrary code execution, with no network-adjacent position or user interaction required beyond that authenticated access.

Official description · NVD

Multiple exploitable stack-based buffer overflow vulnerabilities exist in the boa formFilter 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 these vulnerabilities. This vulnerability deals with the vpnPassword parameter.

Breakdown
17.0 / 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
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