CVE-2026-15486

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.
• 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

1.77% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 76.4% of scored records. A rank, not a probability.

NVD base score

5.3 (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:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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

Deferred. NVD last modified this record on 2026-07-13.

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

2026-07-12 08:15Z1 MO AGO

Last updated

2026-07-13 18:12Z1 MO AGO

Reserved

2026-07-11

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

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

dda982420c1e2e6d3a3b775bafcb2ba1c9a90fa175fdb33c13ac0cf5a7081ce5

• vuldb.comVDB-377793 | TRENDnet TEW-821DAP Firmware Update tools_ddns sub_42026C os command injectionhttps://vuldb.com/vuln/377793vdb-entrytechnical-description
• vuldb.comVDB-377793 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/377793/ctisignaturepermissions-required
• vuldb.comCVE-2026-15486 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-15486third-party-advisory
• vuldb.comSubmit #842383 | Trendnet TEW-821DAP v1.11B03 CWE-78 Improper Neutralization of Special Elements used in an Ohttps://vuldb.com/submit/842383third-party-advisory
• github.comhttps://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_CI4.mdpatch