CVE-2021-20862

lowpriority · track · 17EPSS 0.004 · 32 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.38% (32nd) EPSS

CVSS 3.3 · low

Is it mine?

15 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

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

Technical severity, 0–10. One row per scoring source.

4.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.3–4.3

v2.03.3lowAV:A/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 6.5 · impact 2.9

v3.14.3mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 1.4

v3.14mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-352USLLM-inferred

affected products (15)

Products and version ranges known to be affected.

ELECOM CO.,LTD. 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)enisa_euvdEU
elecom edwrc-2533gst2 firmware≤ 1.25nvdUScpe:2.3:o:elecom:edwrc-2533gst2_firmware:*:*:*:*:*:*:*:*
elecom wrc-1167gst2 firmware≤ 1.25nvdUScpe:2.3:o:elecom:wrc-1167gst2_firmware:*:*:*:*:*:*:*:*
elecom wrc-1167gst2a firmware≤ 1.25nvdUScpe:2.3:o:elecom:wrc-1167gst2a_firmware:*:*:*:*:*:*:*:*
elecom wrc-1167gst2h firmware≤ 1.25nvdUScpe:2.3:o:elecom:wrc-1167gst2h_firmware:*:*:*:*:*:*:*:*
elecom wrc-1750gs firmware≤ 1.03nvdUScpe:2.3:o:elecom:wrc-1750gs_firmware:*:*:*:*:*:*:*:*
elecom wrc-1750gsv firmware≤ 2.11nvdUScpe:2.3:o:elecom:wrc-1750gsv_firmware:*:*:*:*:*:*:*:*
elecom wrc-1900gst firmware≤ 1.03nvdUScpe:2.3:o:elecom:wrc-1900gst_firmware:*:*:*:*:*:*:*:*
elecom wrc-2533gs2-b firmware≤ 1.52nvdUScpe:2.3:o:elecom:wrc-2533gs2-b_firmware:*:*:*:*:*:*:*:*
elecom wrc-2533gs2-w firmware≤ 1.52nvdUScpe:2.3:o:elecom:wrc-2533gs2-w_firmware:*:*:*:*:*:*:*:*
elecom wrc-2533gst firmware≤ 1.03nvdUScpe:2.3:o:elecom:wrc-2533gst_firmware:*:*:*:*:*:*:*:*
elecom wrc-2533gst2 firmware≤ 1.25nvdUScpe:2.3:o:elecom:wrc-2533gst2_firmware:*:*:*:*:*:*:*:*
elecom wrc-2533gst2-g firmware≤ 1.25nvdUScpe:2.3:o:elecom:wrc-2533gst2-g_firmware:*:*:*:*:*:*:*:*
elecom wrc-2533gst2sp firmware≤ 1.25nvdUScpe:2.3:o:elecom:wrc-2533gst2sp_firmware:*:*:*:*:*:*:*:*
elecom wrc-2533gsta firmware≤ 1.03nvdUScpe:2.3:o:elecom:wrc-2533gsta_firmware:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-12-01modified 2026-06-17

references (8)

External citations — patches, advisories, analysis.

scry

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