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MEDIUM · 4.3

CVE-2021-20862

Improper access control vulnerability in ELECOM routers (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v...

Vulnerability Description

Improper access control vulnerability in ELECOM routers (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior) allows a network-adjacent unauthenticated attacker to bypass access restriction, and to obtain anti-CSRF tokens and change the product's settings via unspecified vectors.

CVSS Score

4.3

MEDIUM

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

Affected Products

VendorProductVersions
ElecomWrc-1167Gst2 Firmware<= 1.25
ElecomWrc-1167Gst2-
ElecomWrc-1167Gst2A Firmware<= 1.25
ElecomWrc-1167Gst2A-
ElecomWrc-1167Gst2H Firmware<= 1.25
ElecomWrc-1167Gst2H-
ElecomWrc-2533Gs2-B Firmware<= 1.52
ElecomWrc-2533Gs2-B-
ElecomWrc-2533Gs2-W Firmware<= 1.52
ElecomWrc-2533Gs2-W-
ElecomWrc-1750Gs Firmware<= 1.03
ElecomWrc-1750Gs-
ElecomWrc-1750Gsv Firmware<= 2.11
ElecomWrc-1750Gsv-
ElecomWrc-1900Gst Firmware<= 1.03
ElecomWrc-1900Gst-
ElecomWrc-2533Gst Firmware<= 1.03
ElecomWrc-2533Gst-
ElecomWrc-2533Gst2 Firmware<= 1.25
ElecomWrc-2533Gst2-

References

FAQ

What is CVE-2021-20862?

CVE-2021-20862 is a vulnerability with a CVSS score of 4.3 (MEDIUM). Improper access control vulnerability in ELECOM routers (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v...

How severe is CVE-2021-20862?

CVE-2021-20862 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-20862?

Check the references section above for vendor advisories and patch information. Affected products include: Elecom Wrc-1167Gst2 Firmware, Elecom Wrc-1167Gst2, Elecom Wrc-1167Gst2A Firmware, Elecom Wrc-1167Gst2A, Elecom Wrc-1167Gst2H Firmware.