CVE-2021-27803
A vulnerability was discovered in how p2p/p2p_pd.c in wpa_supplicant before 2.10 processes P2P (Wi-Fi Direct) provision discovery requests.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 7.5 HIGHCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.23% probability · 69th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- w1.fi/wpa supplicant · fedoraproject/fedora · debian/debian linux
- Source
- cve@mitre.org
EPSS 1.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2021/02/27/1Mailing List, Mitigation, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/03/msg00003.htmlMailing List, Third Party Advisory
- 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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SEHS2CFGH3KCSNPHBHNGN5SGV6QPMLZ4/
- https://w1.fi/security/2021-1/0001-P2P-Fix-a-corner-case-in-peer-addition-based-on-PD-R.patchPatch, Vendor Advisory
- https://w1.fi/security/2021-1/wpa_supplicant-p2p-provision-discovery-processing-vulnerability.txtMitigation, Vendor Advisory
- https://www.debian.org/security/2021/dsa-4898Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/02/25/3Mailing List, Mitigation, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/02/27/1Mailing List, Mitigation, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/03/msg00003.htmlMailing List, Third Party Advisory
- 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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SEHS2CFGH3KCSNPHBHNGN5SGV6QPMLZ4/
- https://w1.fi/security/2021-1/0001-P2P-Fix-a-corner-case-in-peer-addition-based-on-PD-R.patchPatch, Vendor Advisory
- https://w1.fi/security/2021-1/wpa_supplicant-p2p-provision-discovery-processing-vulnerability.txtMitigation, Vendor Advisory
- https://www.debian.org/security/2021/dsa-4898Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/02/25/3Mailing List, Mitigation, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.