CVE-2021-27853

ieee 802.2, ietf p802.1q, cisco catalyst 6503-e firmware +53 lainnya

TLP:CLEAR

csirt@kutim:~/threat-intel/cve/CVE-2021-27853

Katalog CVE

CVSS 4.7 · Medium EPSS 0,81%

Kerentanan Authentication Bypass by Spoofing pada ieee 802.2, ietf p802.1q +54 lainnya. Skor CVSS 3.1 4.7 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD
27 September 2022
Terakhir diubah
17 Juni 2026
Status NVD
Modified
CVSS 3.1
4.7 (Medium), sumber NVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-290: Authentication Bypass by Spoofing
EPSS (30 hari)
0,81% peluang dieksploitasi; lebih tinggi dari 55,8% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
ieee ieee 802.2 Semua versi hingga 802.2h-1997
ietf p802.1q Semua versi hingga d1.0
cisco catalyst 6503-e firmware Versi 15.5(01.01.85)sy07
cisco catalyst 6504-e firmware Versi 15.5(01.01.85)sy07
cisco catalyst 6506-e firmware Versi 15.5(01.01.85)sy07
cisco catalyst 6509-e firmware Versi 15.5(01.01.85)sy07
cisco catalyst 6509-neb-a firmware Versi 15.5(01.01.85)sy07
cisco catalyst 6509-v-e firmware Versi 15.5(01.01.85)sy07
cisco catalyst 6513-e firmware Versi 15.5(01.01.85)sy07
cisco catalyst 6807-xl firmware Versi 15.5(01.01.85)sy07
cisco catalyst 6840-x firmware Versi 15.5(01.01.85)sy07
cisco catalyst 6880-x firmware Versi 15.5(01.01.85)sy07
cisco catalyst c6816-x-le firmware Versi 15.5(01.01.85)sy07
cisco catalyst c6824-x-le-40g firmware Versi 15.5(01.01.85)sy07
cisco catalyst c6832-x-le firmware Versi 15.5(01.01.85)sy07
cisco catalyst c6840-x-le-40g firmware Versi 15.5(01.01.85)sy07
cisco catalyst 6800ia firmware Versi 15.5(01.01.85)sy07
cisco ios xe Versi 17.3.3
cisco ios xe Versi 15.2(07)e02
cisco ios xe Versi 15.2(07)e03
cisco ios xe Versi 17.4.1
cisco ios xe Versi 17.6.1
cisco meraki ms390 firmware Semua versi
cisco meraki ms210 firmware Semua versi
cisco meraki ms225 firmware Semua versi
cisco meraki ms250 firmware Semua versi
cisco meraki ms350 firmware Semua versi
cisco meraki ms355 firmware Semua versi
cisco meraki ms410 firmware Semua versi
cisco meraki ms420 firmware Semua versi
cisco meraki ms425 firmware Semua versi
cisco meraki ms450 firmware Semua versi
cisco nexus 93180yc-ex firmware Versi 9.3(5)
cisco nexus 93180yc-fx firmware Versi 9.3(5)
cisco nexus 93180yc-fx3 firmware Versi 9.3(5)
cisco nexus 93240yc-fx2 firmware Versi 9.3(5)
cisco nexus 93360yc-fx2 firmware Versi 9.3(5)
cisco nexus 93120tx firmware Versi 9.3(5)
cisco nexus 93108tc-ex firmware Versi 9.3(5)
cisco nexus 9348gc-fxp firmware Versi 9.3(5)
cisco nexus 93108tc-fx firmware Versi 9.3(5)
cisco nexus 93108tc-fx3p firmware Versi 9.3(5)
cisco nexus 93216tc-fx2 firmware Versi 9.3(5)
cisco n9k-c9316d-gx firmware Versi 9.3(5)
cisco n9k-c93600cd-gx firmware Versi 9.3(5)
cisco n9k-c9332d-gx2b firmware Versi 9.3(5)
cisco n9k-c9348d-gx2a firmware Versi 9.3(5)
cisco n9k-c9364d-gx2a firmware Versi 9.3(5)
cisco n9k-x97160yc-ex firmware Versi 9.3(5)
cisco n9k-x9788tc-fx firmware Versi 9.3(5)
cisco n9k-x9564px firmware Versi 9.3(5)
cisco n9k-x9464px firmware Versi 9.3(5)
cisco n9k-x9564tx firmware Versi 9.3(5)
cisco n9k-x9464tx2 firmware Versi 9.3(5)
cisco nexus 9636pq firmware Versi 9.3(5)
cisco nexus x9636q-r firmware Versi 9.3(5)
cisco nexus 9536pq firmware Versi 9.3(5)
cisco nexus 9432pq firmware Versi 9.3(5)
cisco nexus 9736pq firmware Versi 9.3(5)
cisco n9k-x9736c-fx firmware Versi 9.3(5)

> Data dari konfigurasi CPE di NVD. Ditampilkan 60 dari 100 konfigurasi; daftar lengkap ada di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.