No exploitation reported

CVE-2021-33538

No exploitation reported by the sources we read.

Published2021-06-25
WeaknessCWE-269

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In Weidmueller Industrial WLAN devices in multiple versions an exploitable improper access control vulnerability exists in the iw_webs account settings functionality. A specially crafted user name entry can cause the overwrite of an existing user account password, resulting in remote shell access to the device as that user. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.

Timeline

dates in UTC

2021-06-2519:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-33538?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-33538?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Weidmueller ie-wl-bl-ap-cl-eu firmwareversion to verify

Branch	Affected	Fixed in	Source
1.16	≤ 1.16.18	no fix published	NVD
1.11	≤ 1.11.10	no fix published	NVD

Weidmueller ie-wl-bl-ap-cl-us firmwareversion to verify

Branch	Affected	Fixed in	Source
1.16	≤ 1.16.18	no fix published	NVD
1.11	≤ 1.11.10	no fix published	NVD

Weidmueller ie-wl-vl-ap-br-cl-eu firmwareversion to verify

Branch	Affected	Fixed in	Source
1.16	≤ 1.16.18	no fix published	NVD
1.11	≤ 1.11.10	no fix published	NVD

5 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CNACVSS 3.18.8read 2026-10-23
NVDCVSS 3.18.8read 2026-10-23
NVDCVSS 2.09read 2026-10-23
CNAweakness (CWE)CWE-269read 2026-10-23
FIRST EPSSEPSS score1.0 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2021-06-25
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-33538?

Is CVE-2021-33538 actively exploited?

Active exploitation of CVE-2021-33538 has not been confirmed. Its EPSS score was 1.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-33538?

CVE-2021-33538 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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