CVE-2026-4253

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 ImpactpartialSuccessful exploitation gives limited 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

6.97% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 93.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/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 2026-06-17.

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

2026-03-16 17:02Z5 MO AGO

Last updated

2026-03-16 18:01Z5 MO AGO

Reserved

2026-03-16

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.1)

CNA CVSS vector

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

Weaknesses

• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')Class
• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base

Data version

5.2

Document digest

3fa49b3004f0f7622db78204b222c42fa1328d1f7c9834f49fc8f6846e65ea36

• vuldb.comVDB-351211 | Tenda AC8 Web UploadCfg route_set_user_policy_rule os command injectionhttps://vuldb.com/?id.351211vdb-entrytechnical-description
• vuldb.comVDB-351211 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/?ctiid.351211signaturepermissions-required
• vuldb.comSubmit #771771 | Tenda AC8 V5 V16.03.50.11 OS Command Injectionhttps://vuldb.com/?submit.771771third-party-advisory
• github.comhttps://github.com/digitalandrew/tenda_ac8_v5/blob/main/poc_cmdi_config_upload.pyexploit
• www.tenda.com.cnhttps://www.tenda.com.cn/product