Vulnerability DatabaseCVE-2021-27803
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CVE-2021-27803
Published:February 26, 2021
Updated:May 17, 2026
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.
Related Resources (16)
https://access.redhat.com/security/cve/CVE-2021-27803
https://www.debian.org/security/2021/dsa-4898
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-27803
http://www.openwall.com/lists/oss-security/2021/02/27/1
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SEHS2CFGH3KCSNPHBHNGN5SGV6QPMLZ4/
https://security-tracker.debian.org/tracker/CVE-2021-27803
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IZGUR5XFHATVXTRAEJMODS7ROYHA56NX/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SEHS2CFGH3KCSNPHBHNGN5SGV6QPMLZ4/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZGUR5XFHATVXTRAEJMODS7ROYHA56NX/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KOGP2VIVVXXQ6CZ2HU4DKGPDB4WR24XF/
https://w1.fi/security/2021-1/0001-P2P-Fix-a-corner-case-in-peer-addition-based-on-PD-R.patch
https://www.openwall.com/lists/oss-security/2021/02/25/3
https://security.alpinelinux.org/vuln/CVE-2021-27803
https://lists.debian.org/debian-lts-announce/2021/03/msg00003.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KOGP2VIVVXXQ6CZ2HU4DKGPDB4WR24XF/
https://w1.fi/security/2021-1/wpa_supplicant-p2p-provision-discovery-processing-vulnerability.txt
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CVSS v4
Base Score:
7.7
Attack Vector
ADJACENT
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
ADJACENT
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
EPSS
Base Score:
0.33