Weak Session Key Generation in TP-Link Omada Adoption Protocol

published 2026-08-03 3 mo ago modified 2026-09-29 41 d ago also EUVD-2025-210611

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 26%
public exploits: 0; none known

A cryptographic weakness exists in the Omada adoption protocol where session encryption keys used to protect communications between controllers and managed devices may be predictable due to insufficient entropy in session key generation.

An attacker who successfully intercepts adoption-related communications may be able to recover session encryption keys and decrypt affected communications.

Patch / fix

links 2

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 3 mo ago (2026-08-03)

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	6.9	CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
CNA	4.0	6.9	CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/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	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

TP-Link Systems Inc. Omada Gateways
TP-Link Systems Inc. Omada Switches
TP Link Systems Inc. Omada Access Points
TP-Link Systems Inc Omada Controllers

Classification

Weakness

CWE-331 Insufficient Entropy

References

omadanetworks.com /us/support/download/
patch, product
omadanetworks.com /en/support/download/
patch, product
tp-link.com /us/support/faq/5216/
vendor-advisory

Sources

CVE List CVE-2025-15629
NVD CVE-2025-15629

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary