TRENDnet TEW-WLC100 IKE Phase 1 Aggressive Mode racoon.conf missing encryption

published 2026-08-15 2mo ago modified 2026-08-20 2mo ago also EUVD-2026-59607

cvss: 3.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 7%
public exploits: 0; none known

A vulnerability was determined in TRENDnet TEW-WLC100 2.05b02. This affects an unknown function of the file /etc/racoon.conf of the component IKE Phase 1 Aggressive Mode. This manipulation of the argument exchange_mode causes missing encryption of sensitive data. It is possible to initiate the attack remotely. The complexity of an attack is rather high. The exploitability is reported as difficult. The vendor was contacted early about this disclosure.

Is CVE-2026-19891 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2mo ago (2026-08-17)

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	4.0	6.3	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X
CNA	3.1	3.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:X/RC:R
CNA	3.0	3.7	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:X/RC:R
CNA	2.0	2.6	AV:N/AC:H/Au:N/C:P/I:N/A:N/E:ND/RL:ND/RC:UR
CNA	4.0	6.3	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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
CNA	3.1	3.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA	2.0	2.6	AV:N/AC:H/Au:N/C:P/I:N/A:N

Affected products

TRENDnet TEW-WLC100

Classification

Weakness

CWE-311 Missing Encryption of Sensitive Data
CWE-310 Cryptographic Issues

References

vuldb.com /vuln/390080
vdb-entry, technical-description
vuldb.com /vuln/390080/cti
signature, permissions-required
vuldb.com /cve/CVE-2026-19891
third-party-advisory
vuldb.com /submit/870587
third-party-advisory
app.notion.com /p/TEW-WLC100-2-05b02-38b1f5ba989080f993facb660f17358e?source=copy_link
related

Sources

CVE List CVE-2026-19891
NVD CVE-2026-19891

Fencer Intel 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.