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Vulnerability record · CVE-2021-27803 · published 26 February 2021

CVE-2021-27803: W1.fi wpa supplicant vulnerability

WW1.Fi · Wpa Supplicant

A vulnerability was discovered in how p2p/p2p_pd.c in wpa_supplicant before 2.10 processes P2P (Wi-Fi Direct) provision discovery requests. It could result in denial of service or other impact (potentially execution of arbitrary code), for an attacker within radio range.

7.5 CVSS 3.1 High EPSS 1.2% · top 32.0%
7.5CVSS 3.1 base score, v2 5.4
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
18References
17 Jun 2026Last modified by NVD

Description

A vulnerability was discovered in how p2p/p2p_pd.c in wpa_supplicant before 2.10 processes P2P (Wi-Fi Direct) provision discovery requests. It could result in denial of service or other impact (potentially execution of arbitrary code), for an attacker within radio range.

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2021/02/27/1 Mailing ListMitigationThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00003.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZGUR5XFHATVXTRAEJMODS7
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KOGP2VIVVXXQ6CZ2HU4DKGP
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SEHS2CFGH3KCSNPHBHNGN5S
https://w1.fi/security/2021-1/0001-P2P-Fix-a-corner-case-in-peer-addition-based-on-PD-R.patch PatchVendor Advisory
https://w1.fi/security/2021-1/wpa_supplicant-p2p-provision-discovery-processing-vulnerability.txt MitigationVendor Advisory
https://www.debian.org/security/2021/dsa-4898 Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/02/25/3 Mailing ListMitigationThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/27/1 Mailing ListMitigationThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00003.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZGUR5XFHATVXTRAEJMODS7
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KOGP2VIVVXXQ6CZ2HU4DKGP
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SEHS2CFGH3KCSNPHBHNGN5S
https://w1.fi/security/2021-1/0001-P2P-Fix-a-corner-case-in-peer-addition-based-on-PD-R.patch PatchVendor Advisory
https://w1.fi/security/2021-1/wpa_supplicant-p2p-provision-discovery-processing-vulnerability.txt MitigationVendor Advisory
https://www.debian.org/security/2021/dsa-4898 Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/02/25/3 Mailing ListMitigationThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-27803), CISA KEV, FIRST EPSS (scores of 2026-10-09). This page is refreshed as NVD updates the record.