CVE-2020-26139
An issue was discovered in the kernel in NetBSD 7.1. An Access Point (AP) forwards EAPOL frames to other clients even though the sender has not yet successfully authenticated to the AP. This might be abused in projected Wi-Fi networks to launch denial-of-service attacks against connected clients and makes it easier to exploit other vulnerabilities in connected clients.
- Score
- CVSS 3.1 5.3 Medium
- Status
- Modified - cve@mitre.org
- Published
- 2021-05-11
- Last modified
- 2026-04-14
- Weaknesses
- CWE-287
Affected products
- C-100 Firmware (Arista)
- C-110 Firmware (Arista)
- C-120 Firmware (Arista)
- C-130 Firmware (Arista)
- C-200 Firmware (Arista)
- C-230 Firmware (Arista)
- C-235 Firmware (Arista)
- C-250 Firmware (Arista)
- C-260 Firmware (Arista)
- C-65 Firmware (Arista)
- C-75 Firmware (Arista)
- O-105 Firmware (Arista)
- O-90 Firmware (Arista)
- W-118 Firmware (Arista)
- W-68 Firmware (Arista)
- 1100-4p Firmware (Cisco)
- 1100-8p Firmware (Cisco)
- 1100 Firmware (Cisco)
- 1101-4p Firmware (Cisco)
- 1109-2p Firmware (Cisco)
- 1109-4p Firmware (Cisco)
- Aironet 1532 Firmware (Cisco)
- Aironet 1542d Firmware (Cisco)
- Aironet 1542i Firmware (Cisco)
- Aironet 1552 Firmware (Cisco)
- Aironet 1552h Firmware (Cisco)
- Aironet 1572 Firmware (Cisco)
- Aironet 1702 Firmware (Cisco)
- Aironet 1800 Firmware (Cisco)
- Aironet 1800i Firmware (Cisco)
- Aironet 1810 Firmware (Cisco)
- Aironet 1810w Firmware (Cisco)
- Aironet 1815 Firmware (Cisco)
- Aironet 1815i Firmware (Cisco)
- Aironet 1832 Firmware (Cisco)
- Aironet 1842 Firmware (Cisco)
- Aironet 1852 Firmware (Cisco)
- Aironet 2702 Firmware (Cisco)
- Aironet 2800 Firmware (Cisco)
- Aironet 2800e Firmware (Cisco)
- Aironet 2800i Firmware (Cisco)
- Aironet 3702 Firmware (Cisco)
- Aironet 3800 Firmware (Cisco)
- Aironet 3800e Firmware (Cisco)
- Aironet 3800i Firmware (Cisco)
- Aironet 3800p Firmware (Cisco)
- Aironet 4800 Firmware (Cisco)
- Aironet Ap803 Firmware (Cisco)
- Aironet Iw3702 Firmware (Cisco)
- Catalyst 9105 Firmware (Cisco)
- Catalyst 9105axi Firmware (Cisco)
- Catalyst 9105axw Firmware (Cisco)
- Catalyst 9115 Ap Firmware (Cisco)
- Catalyst 9115 Firmware (Cisco)
- Catalyst 9115axe Firmware (Cisco)
- Catalyst 9115axi Firmware (Cisco)
- Catalyst 9117 Ap Firmware (Cisco)
- Catalyst 9117 Firmware (Cisco)
- Catalyst 9117axi Firmware (Cisco)
- Catalyst 9120 Ap Firmware (Cisco)
- Catalyst 9120 Firmware (Cisco)
- Catalyst 9120axe Firmware (Cisco)
- Catalyst 9120axi Firmware (Cisco)
- Catalyst 9120axp Firmware (Cisco)
- Catalyst 9124 Firmware (Cisco)
- Catalyst 9124axd Firmware (Cisco)
- Catalyst 9124axi Firmware (Cisco)
- Catalyst 9130 Ap Firmware (Cisco)
- Catalyst 9130 Firmware (Cisco)
- Catalyst 9130axe Firmware (Cisco)
- Catalyst 9130axi Firmware (Cisco)
- Catalyst Iw6300 Ac Firmware (Cisco)
- Catalyst Iw6300 Dc Firmware (Cisco)
- Catalyst Iw6300 Dcw Firmware (Cisco)
- Catalyst Iw6300 Firmware (Cisco)
- Esw6300 Firmware (Cisco)
- Ip Phone 6861 Firmware (Cisco)
- Ip Phone 8821 Firmware (Cisco)
- Ip Phone 8832 Firmware (Cisco)
- Ip Phone 8861 Firmware (Cisco)
- Ip Phone 8865 Firmware (Cisco)
- Ir829-2lte-ea-ak9 Firmware (Cisco)
- Ir829-2lte-ea-bk9 Firmware (Cisco)
- Ir829-2lte-ea-ek9 Firmware (Cisco)
- Ir829gw-lte-ga-ck9 Firmware (Cisco)
- Ir829gw-lte-ga-ek9 Firmware (Cisco)
- Ir829gw-lte-ga-sk9 Firmware (Cisco)
- Ir829gw-lte-ga-zk9 Firmware (Cisco)
- Ir829gw-lte-na-ak9 Firmware (Cisco)
- Ir829gw-lte-vz-ak9 Firmware (Cisco)
- Meraki Gr10 Firmware (Cisco)
- Meraki Gr60 Firmware (Cisco)
- Meraki Mr12 Firmware (Cisco)
- Meraki Mr20 Firmware (Cisco)
- Meraki Mr26 Firmware (Cisco)
- Meraki Mr30h Firmware (Cisco)
- Meraki Mr32 Firmware (Cisco)
- Meraki Mr33 Firmware (Cisco)
- Meraki Mr34 Firmware (Cisco)
- Meraki Mr36 Firmware (Cisco)
References
- http://www.openwall.com/lists/oss-security/2021/05/11/12
- https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf
- https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md
- https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu
- https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63
- https://www.fragattacks.com
- https://cert-portal.siemens.com/productcert/html/ssa-019200.html
- https://cert-portal.siemens.com/productcert/html/ssa-913875.html