CVE-2026-9827: Totolink · Path Traversal
Affects TotolinkSource CVE Database V5
Not known to be exploited · CVSS 9.1 Critical.
Data as of 26 Oct 2026, 11:20 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 50% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Total control over the software or total information disclosure
CISA SSVC assessment, 2026-10-23.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 20 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| totolinkTotolink | Affected
| Fixed in– |
AI-suggested
Until a fix is available, restrict authenticated access to the device and monitor for suspicious activity related to file uploads.
Description
CVE-2026-9827 is a critical vulnerability in the boa formUploadFile functionality of the TOTOLINK X2000R router (version TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327). It allows an authenticated attacker to perform a specially crafted HTTP request that leads to arbitrary file write and potentially arbitrary code execution via path traversal.