9.1

CVE-2026-9660: totolink Stack-based Buffer Overflow

CVSS: 9.1v3.1CriticalReceived
Published 20-10-2026Last modified 20-10-2026
Open JSON

Vulnerability summary

CVE-2026-9660 is a critical (CVSS 9.1) Stack-based Buffer Overflow vulnerability in totolink. EPSS estimates a 0.79% chance of exploitation in the next 30 days, higher than 55.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.79%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 20-10-2026
    PublishedVulnerability first disclosed.

Description

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.79%

Chance of exploitation in the next 30 days

Percentile

56%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

21-10-202621-10-2026
EPSS score
0.79%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Totolink1 product
  • totolinkTOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327

1 vendor · 1 product

References

1 links