CVE-2021-20861
ELECOM LAN Routers Authentication Bypass Vulnerability
Description
Improper access control vulnerability in ELECOM LAN 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 authenticated attacker to bypass access restriction and to access the management screen of the product via unspecified vectors.
INFO
Published Date :
Dec. 1, 2021, 3:15 a.m.
Last Modified :
June 28, 2022, 2:11 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2021-20861
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-20861.
| URL | Resource |
|---|---|
| https://jvn.jp/en/jp/JVN88993473/index.html | Third Party Advisory |
| https://www.elecom.co.jp/news/security/20211130-01/ | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-20861 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-20861 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
Jun. 28, 2022
Action Type Old Value New Value Changed CWE CWE-287 NVD-CWE-Other -
Initial Analysis by [email protected]
Dec. 02, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:A/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://jvn.jp/en/jp/JVN88993473/index.html No Types Assigned https://jvn.jp/en/jp/JVN88993473/index.html Third Party Advisory Changed Reference Type https://www.elecom.co.jp/news/security/20211130-01/ No Types Assigned https://www.elecom.co.jp/news/security/20211130-01/ Vendor Advisory Added CWE NIST CWE-287 Added CPE Configuration AND OR *cpe:2.3:o:elecom:wrc-1167gst2_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.25 OR cpe:2.3:h:elecom:wrc-1167gst2:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:elecom:wrc-1167gst2a_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.25 OR cpe:2.3:h:elecom:wrc-1167gst2a:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:elecom:wrc-1167gst2h_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.25 OR cpe:2.3:h:elecom:wrc-1167gst2h:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:elecom:wrc-2533gs2-b_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.52 OR cpe:2.3:h:elecom:wrc-2533gs2-b:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:elecom:wrc-2533gs2-w_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.52 OR cpe:2.3:h:elecom:wrc-2533gs2-w:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:elecom:wrc-1750gs_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.03 OR cpe:2.3:h:elecom:wrc-1750gs:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:elecom:wrc-1750gsv_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.11 OR cpe:2.3:h:elecom:wrc-1750gsv:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:elecom:wrc-1900gst_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.03 OR cpe:2.3:h:elecom:wrc-1900gst:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:elecom:wrc-2533gst_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.03 OR cpe:2.3:h:elecom:wrc-2533gst:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:elecom:wrc-2533gst2_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.25 OR cpe:2.3:h:elecom:wrc-2533gst2:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:elecom:wrc-2533gsta_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.03 OR cpe:2.3:h:elecom:wrc-2533gsta:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:elecom:wrc-2533gst2sp_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.25 OR cpe:2.3:h:elecom:wrc-2533gst2sp:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:elecom:wrc-2533gst2-g_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.25 OR cpe:2.3:h:elecom:wrc-2533gst2-g:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:elecom:edwrc-2533gst2_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.25 OR cpe:2.3:h:elecom:edwrc-2533gst2:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-20861 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-20861
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.08 }} 0.01%
score
0.33970
percentile