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TI-2021-09193 Aliases CVE-2021-27803GHSA-66mx-93rr-rg39

A vulnerability was discovered in how p2p/p2p_pd.c in wpa_supplicant before 2.10…

Priority LOW 37Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01228 69th percentileScored 2026-11-07
Fix Fixed Red Hat: 4 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:w1.fi:wpa_supplicant:*:*:*:*:*:*:*:*1.0 to before 2.10VulnerableWi-Fi Alliance
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*32VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*34VulnerableFedoraproject
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:a:w1.fi:wpa_supplicant:*:*:*:*:*:*:*:* Versions 1.0 to before 2.10 Vulnerable ·Wi-Fi Alliance
  • cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

Red Hat 4 advisories

  • RHSA-2021:0818 Released 2021-03-15 · Red Hat rating Important
    wpa_supplicant security update
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.1) wpa_supplicant-1:2.7-2.el8_1.1
  • RHSA-2021:0816 Released 2021-03-15 · Red Hat rating Important
    wpa_supplicant security update
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) wpa_supplicant-1:2.9-2.el8_2.1
  • RHSA-2021:0809 Released 2021-03-11 · Red Hat rating Important
    wpa_supplicant security update
    • Red Hat Enterprise Linux BaseOS (v. 8) wpa_supplicant-1:2.9-2.el8_3.1
Show 1 more Red Hat advisories
  • RHSA-2021:0808 Released 2021-03-10 · Red Hat rating Important
    wpa_supplicant security update
    • Red Hat Enterprise Linux Client (v. 7) wpa_supplicant-1:2.6-12.el7_9.2
    • Red Hat Enterprise Linux Server (v. 7) wpa_supplicant-1:2.6-12.el7_9.2
    • Red Hat Enterprise Linux Workstation (v. 7) wpa_supplicant-1:2.6-12.el7_9.2

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2021:0809
Red Hat Enterprise Linux BaseOS EUS (v. 8.1)Fixed RHSA-2021:0818
Red Hat Enterprise Linux BaseOS EUS (v. 8.2)Fixed RHSA-2021:0816
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2021:0808
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2021:0808
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2021:0808
Not affected: 2 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27803
  2. 2026-10-03 Alias added: GHSA-66mx-93rr-rg39

References

Patch 1

Advisory 8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences