CVE-2020-3574

highPriorität · verfolgen · 33EPSS 0.080 · 95. PerzentilEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

8.03% (95th) EPSS

CVSS 7.8 · high

Is it mine?

17 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 TCP packet processing functionality of Cisco IP Phones could allow an unauthenticated, remote attacker to cause the phone to stop responding to incoming calls, drop connected calls, or unexpectedly reload. The vulnerability is due to insufficient TCP ingress packet rate limiting. An attacker could exploit this vulnerability by sending a high and sustained rate of crafted TCP traffic to the targeted device. A successful exploit could allow the attacker to impact operations of the phone or cause the phone to reload, leading to a denial of service (DoS) condition.

Behebungen

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

Ein Hersteller-Fix ist verfügbar.

BehobenCisco IP Phones with Multiplatform Firmwarecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
BehobenCisco Webex Room Phonecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

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

7.8

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6.9–7.8

v2.07.8highAV:N/AC:L/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 6.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · psirt@cisco.com USAusnutzbarkeit 3.9 · Auswirkung 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · Cisco PSIRT US

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

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

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-371USCWE-371US

betroffene Produkte (17)

Betroffene Produkte und Versionsbereiche.

Cisco Cisco IP Phones with Multiplatform Firmwarealle Versionencisco_csafUS
Cisco Cisco Webex Room Phonealle Versionencisco_csafUS
Cisco Cisco IP Phones with Multiplatform Firmware≤ n/aenisa_euvdEU
Cisco Systems Inc. Cisco IP Phone 8811 with Multiplatform≤ 11.3.2fstec_bduRU
Cisco Systems Inc. Cisco IP Phone 8841 with Multiplatform≤ 11.3.2fstec_bduRU
Cisco Systems Inc. Cisco IP Phone 8851 with Multiplatform≤ 11.3.2fstec_bduRU
Cisco Systems Inc. Cisco IP Phone 8861 with Multiplatform≤ 11.3.2fstec_bduRU
Cisco Systems Inc. IP DECT 210 Multi-Cell Base Station with Multiplatform≤ 4.8.1fstec_bduRU
Cisco Systems Inc. IP DECT 6825 with Multiplatform≤ 4.8.1fstec_bduRU
cisco ip dect 210 firmware< 4.8.1nvdUScpe:2.3:o:cisco:ip_dect_210_firmware:*:*:*:*:*:*:*:*
cisco ip dect 6825 firmware< 4.8.1nvdUScpe:2.3:o:cisco:ip_dect_6825_firmware:*:*:*:*:*:*:*:*
cisco ip phone 8811 firmware< 11.3.2nvdUScpe:2.3:o:cisco:ip_phone_8811_firmware:*:*:*:*:*:*:*:*
cisco ip phone 8841 firmware< 11.3.2nvdUScpe:2.3:o:cisco:ip_phone_8841_firmware:*:*:*:*:*:*:*:*
cisco ip phone 8851 firmware< 11.3.2nvdUScpe:2.3:o:cisco:ip_phone_8851_firmware:*:*:*:*:*:*:*:*
cisco ip phone 8861 firmware< 11.3.2nvdUScpe:2.3:o:cisco:ip_phone_8861_firmware:*:*:*:*:*:*:*:*
cisco unified ip conference phone 8831 firmware= 9.3(4)nvdUScpe:2.3:o:cisco:unified_ip_conference_phone_8831_firmware:*:*:*:*:*:*:*:*
cisco webex room phone firmware< 1.2.0nvdUScpe:2.3:o:cisco:webex_room_phone_firmware:*:*:*:*:*:*:*:*

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

cisco-sa-voip-phone-flood-dos-YnU9EXOvCisco IP Phone TCP Packet Flood Denial of Service Vulnerability2020-11-04csaf · cisco_csafUS
A vulnerability in the TCP packet processing functionality of Cisco IP Phones could allow an unauthenticated, remote attacker to cause the phone to stop responding to incoming calls, drop connected calls, or unexpectedly reload. The vulnerability is due to insufficient TCP ingress packet rate limiting. An attacker could exploit this vulnerability by sending a high and sustained rate of crafted TCP traffic to the targeted device. A successful exploit could allow the attacker to impact operations of the phone or cause the phone to reload, leading to a denial of service (DoS) condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

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 2020-11-06geändert 2026-06-17

Referenzen (7)

Externe Belege — Patches, Meldungen, Analysen.

scry

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