Vulnerability Database

289,599

Total vulnerabilities in the database

CVE-2021-27853

Layer 2 network filtering capabilities such as IPv6 RA guard or ARP inspection can be bypassed using combinations of VLAN 0 headers and LLC/SNAP headers.

  • Published: Sep 27, 2022
  • Updated: Apr 14, 2023
  • CVE: CVE-2021-27853
  • Severity: Low
  • Exploit:

CVSS v3:

  • Severity: Low
  • Score: 4.7
  • AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

CWEs:

Software From Fixed in
ieee / ieee_802.2 - 802.2h-1997.x
ietf / p802.1q - d1.0.x
cisco / catalyst_6503-e_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / catalyst_6504-e_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / catalyst_6506-e_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / catalyst_6509-e_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / catalyst_6509-neb-a_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / catalyst_6509-v-e_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / catalyst_6513-e_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / catalyst_6807-xl_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / catalyst_6840-x_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / catalyst_6880-x_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / catalyst_c6816-x-le_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / catalyst_c6824-x-le-40g_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / catalyst_c6832-x-le_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / catalyst_c6840-x-le-40g_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / catalyst_6800ia_firmware 15.5(01.01.85)sy07 15.5(01.01.85)sy07.x
cisco / ios_xe 17.3.3 17.3.3.x
cisco / ios_xe 15.2(07)e02 15.2(07)e02.x
cisco / ios_xe 15.2(07)e03 15.2(07)e03.x
cisco / ios_xe 17.4.1 17.4.1.x
cisco / ios_xe 17.6.1 17.6.1.x
cisco / nexus_93180yc-ex_firmware 9.3(5) 9.3(5).x
cisco / nexus_93180yc-fx_firmware 9.3(5) 9.3(5).x
cisco / nexus_93180yc-fx3_firmware 9.3(5) 9.3(5).x
cisco / nexus_93240yc-fx2_firmware 9.3(5) 9.3(5).x
cisco / nexus_93360yc-fx2_firmware 9.3(5) 9.3(5).x
cisco / nexus_93120tx_firmware 9.3(5) 9.3(5).x
cisco / nexus_93108tc-ex_firmware 9.3(5) 9.3(5).x
cisco / nexus_9348gc-fxp_firmware 9.3(5) 9.3(5).x
cisco / nexus_93108tc-fx_firmware 9.3(5) 9.3(5).x
cisco / nexus_93108tc-fx3p_firmware 9.3(5) 9.3(5).x
cisco / nexus_93216tc-fx2_firmware 9.3(5) 9.3(5).x
cisco / n9k-c9316d-gx_firmware 9.3(5) 9.3(5).x
cisco / n9k-c93600cd-gx_firmware 9.3(5) 9.3(5).x
cisco / n9k-c9332d-gx2b_firmware 9.3(5) 9.3(5).x
cisco / n9k-c9348d-gx2a_firmware 9.3(5) 9.3(5).x
cisco / n9k-c9364d-gx2a_firmware 9.3(5) 9.3(5).x
cisco / n9k-x97160yc-ex_firmware 9.3(5) 9.3(5).x
cisco / n9k-x9788tc-fx_firmware 9.3(5) 9.3(5).x
cisco / n9k-x9564px_firmware 9.3(5) 9.3(5).x
cisco / n9k-x9464px_firmware 9.3(5) 9.3(5).x
cisco / n9k-x9564tx_firmware 9.3(5) 9.3(5).x
cisco / n9k-x9464tx2_firmware 9.3(5) 9.3(5).x
cisco / nexus_9636pq_firmware 9.3(5) 9.3(5).x
cisco / nexus_x9636q-r_firmware 9.3(5) 9.3(5).x
cisco / nexus_9536pq_firmware 9.3(5) 9.3(5).x
cisco / nexus_9432pq_firmware 9.3(5) 9.3(5).x
cisco / nexus_9736pq_firmware 9.3(5) 9.3(5).x
cisco / n9k-x9736c-fx_firmware 9.3(5) 9.3(5).x
cisco / n9k-x9732c-ex_firmware 9.3(5) 9.3(5).x
cisco / n9k-x9732c-fx_firmware 9.3(5) 9.3(5).x
cisco / n9k-x9736c-ex_firmware 9.3(5) 9.3(5).x
cisco / n9k-x9636c-rx_firmware 9.3(5) 9.3(5).x
cisco / n9k-x9636c-r_firmware 9.3(5) 9.3(5).x
cisco / n9k-x9432c-s_firmware 9.3(5) 9.3(5).x
cisco / nexus_9716d-gx_firmware 9.3(5) 9.3(5).x
cisco / nexus_9504_firmware 9.3(5) 9.3(5).x
cisco / nexus_9508_firmware 9.3(5) 9.3(5).x
cisco / nexus_9516_firmware 9.3(5) 9.3(5).x
cisco / nexus_92160yc-x_firmware 9.3(5) 9.3(5).x
cisco / nexus_9272q_firmware 9.3(5) 9.3(5).x
cisco / nexus_92304qc_firmware 9.3(5) 9.3(5).x
cisco / nexus_9236c_firmware 9.3(5) 9.3(5).x
cisco / nexus_92300yc_firmware 9.3(5) 9.3(5).x
cisco / nexus_92348gc-x_firmware 9.3(5) 9.3(5).x
cisco / nexus_9364c_firmware 9.3(5) 9.3(5).x
cisco / nexus_9336c-fx2_firmware 9.3(5) 9.3(5).x
cisco / nexus_9336c-fx2-e_firmware 9.3(5) 9.3(5).x
cisco / nexus_9332c_firmware 9.3(5) 9.3(5).x
cisco / nexus_9364c-gx_firmware 9.3(5) 9.3(5).x
cisco / nexus_9800_firmware 9.3(5) 9.3(5).x
cisco / sf500-24_firmware 3.0.0.61 3.0.0.61.x
cisco / sf-500-24mp_firmware 3.0.0.61 3.0.0.61.x
cisco / sf500-24p_firmware 3.0.0.61 3.0.0.61.x
cisco / sf500-48_firmware 3.0.0.61 3.0.0.61.x
cisco / sf500-48mp_firmware 3.0.0.61 3.0.0.61.x
cisco / sf500-18p_firmware 3.0.0.61 3.0.0.61.x
cisco / sg500-28_firmware 3.0.0.61 3.0.0.61.x
cisco / sg500-28mpp_firmware 3.0.0.61 3.0.0.61.x
cisco / sg500-28p_firmware 3.0.0.61 3.0.0.61.x
cisco / sg500-52_firmware 3.0.0.61 3.0.0.61.x
cisco / sg500-52mp_firmware 3.0.0.61 3.0.0.61.x
cisco / sg500-52p_firmware 3.0.0.61 3.0.0.61.x
cisco / sg500x-24_firmware 3.0.0.61 3.0.0.61.x
cisco / sg500x-24mpp_firmware 3.0.0.61 3.0.0.61.x
cisco / sg500x-24p_firmware 3.0.0.61 3.0.0.61.x
cisco / sg500x-48_firmware 3.0.0.61 3.0.0.61.x
cisco / sg500x-48mpp_firmware 3.0.0.61 3.0.0.61.x
cisco / sg500x-48p_firmware 3.0.0.61 3.0.0.61.x