https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-02T11:10:25.417975+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cisco-sa-vu855201-j3z8cktx cisco-sa-VU855201-J3z8CKTX — Vulnerabilities in Layer 2 Network Security Controls Affecting Cisco Products: September 2022 2026-10-02T11:10:25.422654+00:00

On September 27, 2022, the following vulnerabilities affecting Cisco products were disclosed by Cert/CC as part of VU855201, titled L2 network security controls can be bypassed using VLAN 0 stacking and/or 802.3 headers ["https://kb.cert.org/vuls/id/855201"]: CVE-2021-27853: Layer 2 network filtering capabilities such as IPv6 RA guard or ARP inspection can be bypassed using a combination of VLAN 0 headers and LLC/SNAP headers. CVE-2021-27854: Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using a combination of VLAN 0 headers, LLC/SNAP headers in Ethernet to Wifi frame translation, and in the reverse—Wifi to Ethernet. CVE-2021-27861: Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length (and optionally VLAN0 headers). CVE-2021-27862: Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length and Ethernet to Wifi frame conversion (and optionally VLAN0 headers). Exploitation of these vulnerabilities could allow an adjacent attacker to bypass configured first-hop security (FHS) features on the affected Cisco products. For more information about these vulnerabilities, see the Details ["#details"] section of this advisory. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-VU855201-J3z8CKTX ["https://sec.cloudapps.cisco.com/s…

 https://cve.radiocsirt.org/vuln/euvd-2026-259484 EUVD-2026-259484 2026-10-02T11:10:25.422728+00:00 EUVD-2026-259484 https://cve.radiocsirt.org/vuln/fkie_cve-2021-27854 fkie_cve-2021-27854 2026-10-02T11:10:25.422745+00:00

Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using combinations of VLAN 0 headers, LLC/SNAP headers, and converting frames from Ethernet to Wifi and its reverse.

 https://cve.radiocsirt.org/vuln/ghsa-433g-q37h-7crr GHSA-433g-q37h-7crr 2026-10-02T11:10:25.422769+00:00

Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using combinations of VLAN 0 headers, LLC/SNAP headers, and converting frames from Ethernet to Wifi and its reverse.

 https://cve.radiocsirt.org/vuln/gsd-2021-27854 gsd-2021-27854 2026-10-02T11:10:25.422784+00:00 gsd-2021-27854 https://cve.radiocsirt.org/vuln/wid-sec-w-2022-1551 WID-SEC-W-2022-1551 — Layer 2 Netzwerksicherheitskontrollen: Mehrere Schwachstellen ermöglichen Umgehen von Sicherheitsvorkehrungen 2026-10-02T11:10:25.422795+00:00

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Layer 2 Netzwerksicherheitskontrollen in mehreren Produkten ausnutzen, um Sicherheitsvorkehrungen zu umgehen.