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CVE-2021-33538

HIGHCVSS 8.8/10EPSS 1.05%

Last modified

CVE-2021-33538 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 1.05% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
1.05%

59.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
WeidmuellerIe-Wl-Bl-Ap-Cl-Eu Firmware<= 1.16.18
WeidmuellerIe-Wlt-Bl-Ap-Cl-Eu Firmware<= 1.16.18
WeidmuellerIe-Wl-Bl-Ap-Cl-Us Firmware<= 1.16.18
WeidmuellerIe-Wlt-Bl-Ap-Cl-Us Firmware<= 1.16.18
WeidmuellerIe-Wl-Vl-Ap-Br-Cl-Eu Firmware<= 1.16.18
WeidmuellerIe-Wlt-Vl-Ap-Br-Cl-Eu Firmware<= 1.16.18
WeidmuellerIe-Wl-Vl-Ap-Br-Cl-Us Firmware<= 1.16.18
WeidmuellerIe-Wlt-Vl-Ap-Br-Cl-Us Firmware<= 1.16.18
WeidmuellerIe-Wl-Bl-Ap-Cl-Eu Firmware<= 1.11.10
WeidmuellerIe-Wlt-Bl-Ap-Cl-Eu Firmware<= 1.11.10
WeidmuellerIe-Wl-Bl-Ap-Cl-Us Firmware<= 1.11.10
WeidmuellerIe-Wlt-Bl-Ap-Cl-Us Firmware<= 1.11.10
WeidmuellerIe-Wl-Vl-Ap-Br-Cl-Eu Firmware<= 1.11.10
WeidmuellerIe-Wlt-Vl-Ap-Br-Cl-Eu Firmware<= 1.11.10
WeidmuellerIe-Wl-Vl-Ap-Br-Cl-Us Firmware<= 1.11.10
WeidmuellerIe-Wlt-Vl-Ap-Br-Cl-Us Firmware<= 1.11.10

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-33538?
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.
How severe is CVE-2021-33538?
CVE-2021-33538 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.05% probability of exploitation in the next 30 days.
How do I fix CVE-2021-33538?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-33538?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST