CVE-2026-5609

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.63% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 47.8% of scored records. A rank, not a probability.

NVD base score

7.4 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Analyzed. NVD last modified this record on 2026-07-24.

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.

Published

2026-04-06 01:15Z5 MO AGO

Last updated

2026-04-06 18:21Z5 MO AGO

Reserved

2026-04-05

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

High (CVSS 8.7)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
• CWE-121Stack-based Buffer OverflowVariant

Data version

5.2

Document digest

4dc544fddb8e9ed4b01048c25f9863fbe4f0de3ed65f51658cc0a0f9d7a5453b

• vuldb.comVDB-355400 | Tenda i12 Parameter wifiSSIDset formwrlSSIDset stack-based overflowhttps://vuldb.com/vuln/355400vdb-entrytechnical-description
• vuldb.comVDB-355400 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/355400/ctisignaturepermissions-required
• vuldb.comSubmit #785337 | Tenda i12 V1.0.0.11(3862) Stack-based Buffer Overflowhttps://vuldb.com/submit/785337third-party-advisory
• github.comhttps://github.com/Litengzheng/vuldb_new/blob/main/i12/vul_107/README.mdexploit
• www.tenda.com.cnhttps://www.tenda.com.cn/product