CVE-2022-20756

mediumPriorität · verfolgen · 31EPSS 0.015 · 73. PerzentilEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.46% (73rd) EPSS

CVSS 5 · medium

Is it mine?

15 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 RADIUS feature of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause the affected system to stop processing RADIUS packets. This vulnerability is due to improper handling of certain RADIUS requests. An attacker could exploit this vulnerability by attempting to authenticate to a network or a service where the access server is using Cisco ISE as the RADIUS server. A successful exploit could allow the attacker to cause Cisco ISE to stop processing RADIUS requests, causing authentication/authorization timeouts, which would then result in legitimate requests being denied access. Note: To recover the ability to process RADIUS packets, a manual restart of the affected Policy Service Node (PSN) is required. See the Details section for more information.

Behebungen

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

Ein Hersteller-Fix ist verfügbar.

BehobenCisco Identity Services Engine Softwarecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

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

8.6

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5–8.6

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

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

v3.18.6highAV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · ENISA EU

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · psirt@cisco.com USAusnutzbarkeit 3.9 · Auswirkung 4

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)

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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-399USCWE-399US

betroffene Produkte (15)

Betroffene Produkte und Versionsbereiche.

Cisco Cisco Identity Services Engine Softwarealle Versionencisco_csafUS
Cisco Cisco Identity Services Engine Software≤ n/aenisa_euvdEU
Cisco Systems Inc. Cisco Identity Services Engine2.2P17 → 2.3fstec_bduRU
Cisco Systems Inc. Cisco Identity Services Engine2.4P12 → 2.6P4fstec_bduRU
Cisco Systems Inc. Cisco Identity Services Engine2.6P5 → 2.6P11fstec_bduRU
Cisco Systems Inc. Cisco Identity Services Engine2.7P2 → 2.7P6fstec_bduRU
Cisco Systems Inc. Cisco Identity Services Engine3.0 → 3.0P5fstec_bduRU
Cisco Systems Inc. Cisco Identity Services Engine3.1 → 3.1P1fstec_bduRU
cisco identity services engine= 2.2.0nvdUScpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*
cisco identity services engine= 2.4.0nvdUScpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*
cisco identity services engine= 2.6.0nvdUScpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*
cisco identity services engine= 2.7.0nvdUScpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*
cisco identity services engine= 2.7.0.356nvdUScpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*
cisco identity services engine= 3.0.0nvdUScpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*
cisco identity services engine= 3.1nvdUScpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

cisco-sa-ise-dos-JLh9TxBpCisco Identity Services Engine RADIUS Service Denial of Service Vulnerability2022-03-02csaf · cisco_csafUS
A vulnerability in the RADIUS feature of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause the affected system to stop processing RADIUS packets. This vulnerability is due to improper handling of certain RADIUS requests. An attacker could exploit this vulnerability by attempting to authenticate to a network or a service where the access server is using Cisco ISE as the RADIUS server. A successful exploit could allow the attacker to cause Cisco ISE to stop processing RADIUS requests, causing authentication/authorization timeouts, which would then result in legitimate requests being denied access. Note: To recover the ability to process RADIUS packets, a manual restart of the affected Policy Service Node (PSN) is required. See the Details ["#details"] section for more information. 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 2022-04-06geändert 2026-06-17

Referenzen (6)

Externe Belege — Patches, Meldungen, Analysen.

scry

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