HOMEVULNERABILITIESCVE-2026-36738
MEDIUM

CVE-2026-36738

Published: May 13, 2026· Updated: May 14, 2026

6.8
CVSS v3.1
EPSS:0.03%probability of exploitation in 30 daysPercentile:9.4th

Official Description

U-SPEED AC1200 Gigabit Wi-Fi Router (Model: T18-21K) V1.0 is vulnerable to Incorrect Access Control. The device exposes a UART interface that lacks authentication, authorization, or access control mechanisms. An attacker with physical access to the UART pins can connect to the interface and gain unrestricted access to device functionality.

NVD Source

Technical Analysis

CVE-2026-36738 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorPhysical
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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All References (3)

→
https://github.com/N0tMilk/vulnerability-research
→
https://github.com/N0tMilk/vulnerability-research/tree/main/IoT/CVE-2026-36738
→
https://github.com/N0tMilk/vulnerability-research/tree/main/IoT/CVE-2026-36738

Quick Facts

CVE IDCVE-2026-36738
CVSS Score6.8 / 10
SeverityMEDIUM
CISA KEVNo
EPSS (30d)0.03%
PublishedMay 13, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-36738 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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