01 Record
CVE-2026-11405
Hidden backdoor authentication mechanism in multiple versions of Tenda firmware allows admin access to web management interface
CriticalPUBLISHEDCNA: certcc
CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
02 Description
Hidden backdoor authentication mechanism in multiple versions of Tenda firmware allows admin access to web management interface
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.76% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 54.9% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Deferred. NVD last modified this record on 2026-10-25.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-07-06 19:17Z3 MO AGO
- Last updated
- 2026-07-08 13:40Z3 MO AGO
- Reserved
- 2026-06-05
- Assigning CNA
- certcc
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- No CWE assigned
- Data version
- 5.2
- Document digest
- 2890ebffb755a7ba1fbfc03435c87ff8cf504d24f9aaa3b2edee8d12b79eed1f
05 Affected products
VendorProductVersionsPlatforms
TendafirmwareUS_AC6V2.0RTL_V15.03.06.51_multi_T, US_AC5V1.0RTL_V15.03.06.48_multi_TDE01, US_AC10V1.0re_V15.03.06.46_multi_TDE01, US_W15EV1.0br_V15.11.0.5(1068_1567_841)_EN_TDE, US_FH1201V1.0BR_V1.2.0.14(408)_EN_TD—
06 References
- cwe.mitre.orghttps://cwe.mitre.org/data/definitions/912.html
- kb.cert.orghttps://kb.cert.org/vuls/id/213560
- www.kb.cert.orghttps://www.kb.cert.org/vuls/id/213560