No exploitation reported

CVE-2021-37563

No exploitation reported by the sources we read.

Published2021-12-26
WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

MediaTek microchips, as used in NETGEAR devices through 2021-11-11 and other devices, mishandle the WPS (Wi-Fi Protected Setup) protocol. (Affected Chipsets MT7603E, MT7610, MT7612, MT7613, MT7615, MT7620, MT7622, MT7628, MT7629, MT7915; Affected Software Versions 7.4.0.0; Out-of-bounds write).

Timeline

dates in UTC

2021-12-2600:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-37563?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-37563?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Mediatek mt7603e firmwareversion to verify

Branch	Affected	Fixed in	Source
7.4	= 7.4.0.0	no fix published	NVD

Mediatek mt7610 firmwareversion to verify

Branch	Affected	Fixed in	Source
7.4	= 7.4.0.0	no fix published	NVD

Mediatek mt7612 firmwareversion to verify

Branch	Affected	Fixed in	Source
7.4	= 7.4.0.0	no fix published	NVD

7 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

corp.mediatek.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CNACVSS 3.18.2read 2026-10-23
NVDCVSS 3.18.8read 2026-10-23
NVDCVSS 2.09.3read 2026-10-23
NVDweakness (CWE)CWE-787read 2026-10-23
FIRST EPSSEPSS score1.2 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2021-12-26
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2021-37563?

Is CVE-2021-37563 actively exploited?

Active exploitation of CVE-2021-37563 has not been confirmed. Its EPSS score was 1.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-37563?

CVE-2021-37563 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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