CVE-2023-20200

mediumpriority · track · 25EPSS 0.007 · 52 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.68% (52nd) EPSS

CVSS 6.3 · medium

Is it mine?

210 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A vulnerability in the Simple Network Management Protocol (SNMP) service of Cisco FXOS Software for Firepower 4100 Series and Firepower 9300 Security Appliances and of Cisco UCS 6300 Series Fabric Interconnects could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to the improper handling of specific SNMP requests. An attacker could exploit this vulnerability by sending a crafted SNMP request to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Note: This vulnerability affects all supported SNMP versions. To exploit this vulnerability through SNMPv2c or earlier, an attacker must know the SNMP community string that is configured on an affected device. To exploit this vulnerability through SNMPv3, the attacker must have valid credentials for an SNMP user who is configured on the affected device.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco Firepower Extensible Operating System (FXOS) 2.2.1.63 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.1.63 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.1.66 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.1.66 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.1.70 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.1.70 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.2.17 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.2.17 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.2.19 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.2.19 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.2.24 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.2.24 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.2.26 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.2.26 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.2.28 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.2.28 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.2.54 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.2.54 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.2.60 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.2.2.60 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.56 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.56 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.58 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.58 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.66 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.66 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.73 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.73 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.75 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.75 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.88 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.88 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.91 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.91 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.93 when installed on Cisco Firepower 4100 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Firepower Extensible Operating System (FXOS) 2.3.1.93 when installed on Cisco Firepower 9000 Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Unified Computing System (Managed)cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

Technical severity, 0–10. One row per scoring source.

7.7

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.8–7.7

v3.16.3mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 4

v3.17.7highAV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.7highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.7highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Hsecondary · psirt@cisco.com USexploitability 3.1 · impact 4

v3.15.8mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.7highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Hsecondary · Cisco PSIRT US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-732USprimaryCWE-404USCWE-835US

affected products (210)

Products and version ranges known to be affected.

Cisco Firepower 4100 Seriesall versionscert_bundDEcpe:/a:cisco:firepower:4100_series
Cisco Firepower 9300 Security Appliancesall versionscert_bundDEcpe:/a:cisco:firepower:9300_security_appliances
Cisco Unified Computing System (UCS) 6300 Series Fabric Interconnectsall versionscert_bundDEcpe:/h:cisco:unified_computing_system:6300_series_fabric_interconnects
Cisco Firepower Extensible Operating System (FXOS) 2.2.1.63 when installed on Cisco Firepower 4100 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.1.63 when installed on Cisco Firepower 9000 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.1.66 when installed on Cisco Firepower 4100 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.1.66 when installed on Cisco Firepower 9000 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.1.70 when installed on Cisco Firepower 4100 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.1.70 when installed on Cisco Firepower 9000 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.2.17 when installed on Cisco Firepower 4100 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.2.17 when installed on Cisco Firepower 9000 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.2.19 when installed on Cisco Firepower 4100 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.2.19 when installed on Cisco Firepower 9000 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.2.24 when installed on Cisco Firepower 4100 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.2.24 when installed on Cisco Firepower 9000 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.2.26 when installed on Cisco Firepower 4100 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.2.26 when installed on Cisco Firepower 9000 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.2.28 when installed on Cisco Firepower 4100 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.2.28 when installed on Cisco Firepower 9000 Seriesall versionscisco_csafUS
Cisco Firepower Extensible Operating System (FXOS) 2.2.2.54 when installed on Cisco Firepower 4100 Seriesall versionscisco_csafUS

showing 20 of 210

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2129Cisco Firepower und Cisco Unified Computing System: Schwachstelle ermöglicht Denial of ServiceDeutsch2023-08-23csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Cisco Firepower und Cisco Unified Computing System (UCS) ausnutzen, um einen Denial of Service Angriff durchzuführen.
cisco-sa-fp-ucsfi-snmp-dos-qtv69NAOCisco Firepower 4100 Series, Firepower 9300 Security Appliances, and UCS 6300 Series Fabric Interconnects SNMP Denial of Service Vulnerability2023-08-23csaf · cisco_csafUS
A vulnerability in the Simple Network Management Protocol (SNMP) service of Cisco FXOS Software for Firepower 4100 Series and Firepower 9300 Security Appliances and of Cisco UCS 6300 Series Fabric Interconnects could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to the improper handling of specific SNMP requests. An attacker could exploit this vulnerability by sending a crafted SNMP request to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Note: This vulnerability affects all supported SNMP versions. To exploit this vulnerability through SNMPv2c or earlier, an attacker must know the SNMP community string that is configured on an affected device. To exploit this vulnerability through SNMPv3, the attacker must have valid credentials for an SNMP user who is configured on the affected device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is part of the August 2023 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: August 2023 Semiannual Cisco FXOS and NX-OS Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75058"].

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund cisco_csaf NVD CVE.org MITRE

published 2023-08-23modified 2026-06-17

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references (5)

External citations — patches, advisories, analysis.

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