VulnerabilityModified

CVE-2021-20862

MEDIUM 4.3EPSS 0.37%

Does this matter?

Lower severity and a low EPSS score (0.37%). Track it; it rarely justifies an emergency change on its own.

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 3.1: 4.3 MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS: 0.37% probability · 31th percentile
CISA KEV: Not listed
Affected: elecom/wrc-1167gst2 firmware · elecom/wrc-1167gst2a firmware · elecom/wrc-1167gst2h firmware · elecom/wrc-2533gs2-b firmware · elecom/wrc-2533gs2-w firmware · elecom/wrc-1750gs firmware · elecom/wrc-1750gsv firmware · elecom/wrc-1900gst firmware · elecom/wrc-2533gst firmware · elecom/wrc-2533gst2 firmware · elecom/wrc-2533gsta firmware · elecom/wrc-2533gst2sp firmware · elecom/wrc-2533gst2-g firmware · elecom/edwrc-2533gst2 firmware
Source: vultures@jpcert.or.jp

References

https://jvn.jp/en/vu/JVNVU94527926/index.htmlThird Party Advisory
https://www.elecom.co.jp/news/security/20211130-01/Vendor Advisory
https://jvn.jp/en/vu/JVNVU94527926/index.htmlThird Party Advisory
https://www.elecom.co.jp/news/security/20211130-01/Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.