CVE-2019-1859

mediumPriorität · verfolgen · 29EPSS 0.008 · 58. PerzentilEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.84% (58th) EPSS

CVSS 6.5 · medium

Is it mine?

130 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 Secure Shell (SSH) authentication process of Cisco Small Business Switches software could allow an attacker to bypass client-side certificate authentication and revert to password authentication. The vulnerability exists because OpenSSH mishandles the authentication process. An attacker could exploit this vulnerability by attempting to connect to the device via SSH. A successful exploit could allow the attacker to access the configuration as an administrative user if the default credentials are not changed. There are no workarounds available; however, if client-side certificate authentication is enabled, disable it and use strong password authentication. Client-side certificate authentication is disabled by default.

Behebungen

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

Ein Hersteller-Fix ist verfügbar.

BehobenCisco Small Business 200 Series Smart Switchescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
BehobenCisco Small Business 250 Series Smart Switches Softwarecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
BehobenCisco Small Business 300 Series Managed Switchescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
BehobenCisco Small Business 350 Series Managed Switches Software cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
BehobenCisco Small Business 350X Series Managed Switches Software cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
BehobenCisco Small Business 500 Series Stackable Managed Switches cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
BehobenCisco Small Business 550X Series Stackable Managed Switches Software cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

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

7.2

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6.5–7.2

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USAusnutzbarkeit 8 · Auswirkung 6.4

v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USAusnutzbarkeit 1.2 · Auswirkung 5.9

v3.07.2highCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.07.2highCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@cisco.com USAusnutzbarkeit 1.2 · Auswirkung 5.9

v3.07.2highCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · Cisco PSIRT US

v3.17.2highAV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.16.6mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-295USprimärCWE-285USCWE-285US

betroffene Produkte (130)

Betroffene Produkte und Versionsbereiche.

Cisco Cisco Small Business 200 Series Smart Switchesalle Versionencisco_csafUS
Cisco Cisco Small Business 250 Series Smart Switches Softwarealle Versionencisco_csafUS
Cisco Cisco Small Business 300 Series Managed Switchesalle Versionencisco_csafUS
Cisco Cisco Small Business 350 Series Managed Switches Software alle Versionencisco_csafUS
Cisco Cisco Small Business 350X Series Managed Switches Software alle Versionencisco_csafUS
Cisco Cisco Small Business 500 Series Stackable Managed Switches alle Versionencisco_csafUS
Cisco Cisco Small Business 550X Series Stackable Managed Switches Software alle Versionencisco_csafUS
Cisco Cisco Small Business 200 Series Smart Switchesunspecified → 1.4.10.6enisa_euvdEU
Cisco Cisco Small Business 200 Series Smart Switchesunspecified → 2.5.0.78enisa_euvdEU
Cisco Systems Inc. Cisco 250 Series Smart Switches≤ 2.5.0.78fstec_bduRU
Cisco Systems Inc. Cisco 350 Series Managed Switches≤ 2.5.0.78fstec_bduRU
Cisco Systems Inc. Cisco 350X Series Managed Switches≤ 2.5.0.78fstec_bduRU
Cisco Systems Inc. Cisco 550X Series Stackable Managed Switches≤ 2.5.0.78fstec_bduRU
Cisco Systems Inc. Cisco Small Business 200 Series Smart Switches≤ 1.4.10.6fstec_bduRU
Cisco Systems Inc. Cisco Small Business 300 Series Managed Switches≤ 1.4.10.6fstec_bduRU
Cisco Systems Inc. Cisco Small Business 500 Series Managed Switches≤ 1.4.10.6fstec_bduRU
cisco sf200-24 firmware< 1.4.10.6nvdUScpe:2.3:o:cisco:sf200-24_firmware:*:*:*:*:*:*:*:*
cisco sf200-24fp firmware< 1.4.10.6nvdUScpe:2.3:o:cisco:sf200-24fp_firmware:*:*:*:*:*:*:*:*
cisco sf200-24p firmware< 1.4.10.6nvdUScpe:2.3:o:cisco:sf200-24p_firmware:*:*:*:*:*:*:*:*
cisco sf200-48 firmware< 1.4.10.6nvdUScpe:2.3:o:cisco:sf200-48_firmware:*:*:*:*:*:*:*:*

20 von 130 angezeigt

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

cisco-sa-20190501-scbvCisco Small Business Switches Secure Shell Certificate Authentication Bypass Vulnerability2019-05-01csaf · cisco_csafUS
A vulnerability in the Secure Shell (SSH) authentication process of Cisco Small Business Switches software could allow an attacker to bypass client-side certificate authentication and revert to password authentication. The vulnerability exists because OpenSSH mishandles the authentication process. An attacker could exploit this vulnerability by attempting to connect to the device via SSH. A successful exploit could allow the attacker to access the configuration as an administrative user if the default credentials are not changed. 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 2019-05-03geändert 2026-06-17

verwandt (1,895)

Verwandte Einträge.

ID	Schweregrad	EPSS	ausnutzbar	veröffentlicht
CVE-2026-85102US	—OT kritisch	54.1% (99th)	KEV	2026-09-09
Improper certificate trust validation during VPN negotiation in Check Point Quantum Security Gateway may allow an unauthenticated remote attacker to execute arbitrary code on the G…
CVE-2023-41991US	medium5.5OT kritisch	13.4% (96th)	KEV	2023-09-21
A certificate validation issue was addressed. This issue is fixed in macOS Ventura 13.6, iOS 16.7 and iPadOS 16.7. A malicious app may be able to bypass signature validation. Apple…
CVE-2023-20963US	high7.8OT kritisch	1.47% (74th)	KEV	2023-03-24
In WorkSource, there is a possible parcel mismatch. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed…
CVE-2022-26923US	high9.0OT kritisch	83.5% (100th)	KEV	2022-05-10
Active Directory Domain Services Elevation of Privilege Vulnerability
CVE-2022-20703US	high8.0OT kritisch	9.20% (95th)	KEV	2022-02-10
Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate pr…

+1890 weitere

Referenzen (7)

Externe Belege — Patches, Meldungen, Analysen.

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