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HIGH · 7.5

CVE-2021-33536

In Weidmueller Industrial WLAN devices in multiple versions an exploitable denial-of-service vulnerability exists in ServiceAgent functionality. A specially crafted packet can cause an integer underfl...

Vulnerability Description

In Weidmueller Industrial WLAN devices in multiple versions an exploitable denial-of-service vulnerability exists in ServiceAgent functionality. A specially crafted packet can cause an integer underflow, triggering a large memcpy that will access unmapped or out-of-bounds memory. An attacker can send this packet while unauthenticated to trigger this vulnerability.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

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

Related Weaknesses (CWE)

CWE-191

References

FAQ

What is CVE-2021-33536?

CVE-2021-33536 is a vulnerability with a CVSS score of 7.5 (HIGH). In Weidmueller Industrial WLAN devices in multiple versions an exploitable denial-of-service vulnerability exists in ServiceAgent functionality. A specially crafted packet can cause an integer underfl...

How severe is CVE-2021-33536?

CVE-2021-33536 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-33536?

Check the references section above for vendor advisories and patch information. Affected products include: Weidmueller Ie-Wl-Bl-Ap-Cl-Eu Firmware, Weidmueller Ie-Wl-Bl-Ap-Cl-Eu, Weidmueller Ie-Wlt-Bl-Ap-Cl-Eu Firmware, Weidmueller Ie-Wlt-Bl-Ap-Cl-Eu, Weidmueller Ie-Wl-Bl-Ap-Cl-Us Firmware.