HOME VULNERABILITIESCVE-2026-8259

HIGH

CVE-2026-8259

CWE-77Published: May 11, 2026· Updated: May 11, 2026

7.2

CVSS v3.1

EPSS:0.28%probability of exploitation in 30 daysPercentile:51.5th

Official Description

A vulnerability has been found in Tenda AC6 2.0/15.03.06.23. The affected element is an unknown function of the file /goform/telnet of the component httpd. The manipulation of the argument lan.ip leads to os command injection. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used.

Technical Analysis

CVE-2026-8259 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

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 7.2.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.High

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

tenda2 products

ac6 firmwareac6

Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/Tenda%20AC6V2%20TendaTelnet%20Command%20Injection.md

ADVISORYhttps://vuldb.com/submit/809877

ADVISORYhttps://vuldb.com/vuln/362556

All References (5)

→

https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/Tenda%20AC6V2%20TendaTelnet%20Command%20Injection.mdExploit · Third Party Advisory

→

https://vuldb.com/submit/809877Third Party Advisory · VDB Entry

→

https://vuldb.com/vuln/362556Third Party Advisory · VDB Entry

→

https://vuldb.com/vuln/362556/ctiPermissions Required · VDB Entry

→

https://www.tenda.com.cn/Product

Quick Facts

CVE IDCVE-2026-8259

CVSS Score7.2 / 10

SeverityHIGH

WeaknessCWE-77

CISA KEVNo

EPSS (30d)0.28%

Affected1 vendor

PublishedMay 11, 2026

Related CVEs (CWE-77)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2026-8259 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.

← All Vulnerabilities·Search for CVE-2026-8259·NVD