CVE-2020-3496

mediumPriorität · verfolgen · 22EPSS 0.017 · 78. PerzentilEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.74% (78th) EPSS

CVSS 5 · medium

Is it mine?

123 products

Prüfe deine Angriffsfläche

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · bewertet 2026-10-27

A vulnerability in the IPv6 packet processing engine of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of incoming IPv6 traffic. An attacker could exploit this vulnerability by sending a crafted IPv6 packet through an affected device. A successful exploit could allow the attacker to cause the switch management CLI to stop responding, resulting in a DoS condition. This vulnerability is specific to IPv6 traffic. IPv4 traffic is not affected.

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

BehobenCisco Small Business 250 Series Smart Switches Softwarecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

5.3

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 2.9

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 1.4

v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · ENISA EU

v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · psirt@cisco.com USAusnutzbarkeit 3.9 · Auswirkung 1.4

v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · Cisco PSIRT US

v3.15.3mediumAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · FSTEC (BDU) RU

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:Usecondary · CVSS-BT (t0sche)

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-20USprimärCWE-20US

betroffene Produkte (123)

Betroffene Produkte und Versionsbereiche.

Cisco Cisco Small Business 250 Series Smart Switches Softwarealle Versionencisco_csafUS
Cisco Cisco Small Business 250 Series Smart Switches Software≤ n/aenisa_euvdEU
Cisco Systems Inc. Cisco 350 Series Managed Switches≤ 2.5.5.47fstec_bduRU
Cisco Systems Inc. Cisco 350X Series Stackable Managed Switches≤ 2.5.5.47fstec_bduRU
Cisco Systems Inc. Cisco 550X Series Stackable Managed Switches≤ 2.5.5.47fstec_bduRU
Cisco Systems Inc. Cisco Small Business 200 Series Smart Switches≤ 2.5.5.47fstec_bduRU
Cisco Systems Inc. Cisco Small Business 250 Series≤ 2.5.5.47fstec_bduRU
Cisco Systems Inc. Cisco Small Business 300 Series Managed Switches≤ 2.5.5.47fstec_bduRU
Cisco Systems Inc. Cisco Small Business 500 Series Managed Switches≤ 2.5.5.47fstec_bduRU
cisco sf200-24 firmware≤ 2.5.5.47nvdUScpe:2.3:o:cisco:sf200-24_firmware:*:*:*:*:*:*:*:*
cisco sf200-24fp firmware≤ 2.5.5.47nvdUScpe:2.3:o:cisco:sf200-24fp_firmware:*:*:*:*:*:*:*:*
cisco sf200-24p firmware≤ 2.5.5.47nvdUScpe:2.3:o:cisco:sf200-24p_firmware:*:*:*:*:*:*:*:*
cisco sf200-48 firmware≤ 2.5.5.47nvdUScpe:2.3:o:cisco:sf200-48_firmware:*:*:*:*:*:*:*:*
cisco sf200-48p firmware≤ 2.5.5.47nvdUScpe:2.3:o:cisco:sf200-48p_firmware:*:*:*:*:*:*:*:*
cisco sf250-24 firmware≤ 2.5.5.47nvdUScpe:2.3:o:cisco:sf250-24_firmware:*:*:*:*:*:*:*:*
cisco sf250-24p firmware≤ 2.5.5.47nvdUScpe:2.3:o:cisco:sf250-24p_firmware:*:*:*:*:*:*:*:*
cisco sf250-48 firmware≤ 2.5.5.47nvdUScpe:2.3:o:cisco:sf250-48_firmware:*:*:*:*:*:*:*:*
cisco sf250-48hp firmware≤ 2.5.5.47nvdUScpe:2.3:o:cisco:sf250-48hp_firmware:*:*:*:*:*:*:*:*
cisco sf300-08 firmware≤ 2.5.5.47nvdUScpe:2.3:o:cisco:sf300-08_firmware:*:*:*:*:*:*:*:*
cisco sf300-24 firmware≤ 2.5.5.47nvdUScpe:2.3:o:cisco:sf300-24_firmware:*:*:*:*:*:*:*:*

20 von 123 angezeigt

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

cisco-sa-sbss-ipv6-dos-tsgqbffWCisco Small Business Smart and Managed Switches Denial of Service Vulnerability2020-08-19csaf · cisco_csafUS
A vulnerability in the IPv6 packet processing engine of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of incoming IPv6 traffic. An attacker could exploit this vulnerability by sending a crafted IPv6 packet through an affected device. A successful exploit could allow the attacker to cause the switch management CLI to stop responding, resulting in a DoS condition. This vulnerability is specific to IPv6 traffic. IPv4 traffic is not affected. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbss-ipv6-dos-tsgqbffW ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbss-ipv6-dos-tsgqbffW"]

auch bekannt als (4)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd fstec_bdu cisco_csaf nvd NVD CVE.org MITRE

veröffentlicht 2020-08-26geändert 2026-06-17

verwandt (25,198)

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+25193 weitere

Referenzen (6)

Externe Belege — Patches, Meldungen, Analysen.

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