CVE-2023-20200

Published Aug 23, 2023 CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed

Description

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Cisco

Cisco Unified Computing System (Managed)

affected

Version	Status	Constraints
`3.1(1e)`	affected	—
`3.1(1g)`	affected	—
`3.1(1h)`	affected	—
`3.1(1k)`	affected	—
`3.1(1l)`	affected	—
`3.1(2b)`	affected	—
`3.1(2c)`	affected	—
`3.1(2e)`	affected	—
`3.1(2f)`	affected	—
`3.1(2g)`	affected	—
`3.1(2h)`	affected	—
`3.1(3a)`	affected	—
`3.1(3b)`	affected	—
`3.1(3c)`	affected	—
`3.1(3d)`	affected	—
`3.1(3e)`	affected	—
`3.1(3f)`	affected	—
`3.1(3h)`	affected	—
`3.1(3j)`	affected	—
`3.1(3k)`	affected	—
`3.1(2d)`	affected	—
`3.1(3l)`	affected	—
`3.2(1d)`	affected	—
`3.2(2b)`	affected	—
`3.2(2c)`	affected	—
`3.2(2d)`	affected	—
`3.2(2e)`	affected	—
`3.2(2f)`	affected	—
`3.2(3a)`	affected	—
`3.2(3b)`	affected	—
`3.2(3d)`	affected	—
`3.2(3e)`	affected	—
`3.2(3g)`	affected	—
`3.2(3h)`	affected	—
`3.2(3i)`	affected	—
`3.2(3j)`	affected	—
`3.2(3k)`	affected	—
`3.2(3l)`	affected	—
`3.2(3n)`	affected	—
`3.2(3o)`	affected	—
`3.2(3p)`	affected	—
`4.0(1a)`	affected	—
`4.0(1b)`	affected	—
`4.0(1c)`	affected	—
`4.0(1d)`	affected	—
`4.0(2a)`	affected	—
`4.0(2b)`	affected	—
`4.0(2d)`	affected	—
`4.0(2e)`	affected	—
`4.0(4b)`	affected	—
`4.0(4c)`	affected	—
`4.0(4d)`	affected	—
`4.0(4e)`	affected	—
`4.0(4f)`	affected	—
`4.0(4g)`	affected	—
`4.0(4h)`	affected	—
`4.0(4a)`	affected	—
`4.0(4i)`	affected	—
`4.0(4k)`	affected	—
`4.0(4l)`	affected	—
`4.0(4m)`	affected	—
`4.0(4n)`	affected	—
`4.0(4o)`	affected	—
`4.1(1a)`	affected	—
`4.1(1b)`	affected	—
`4.1(1c)`	affected	—
`4.1(2a)`	affected	—
`4.1(1d)`	affected	—
`4.1(1e)`	affected	—
`4.1(2b)`	affected	—
`4.1(3a)`	affected	—
`4.1(3b)`	affected	—
`4.1(2c)`	affected	—
`4.1(3d)`	affected	—
`4.1(3c)`	affected	—
`4.1(3e)`	affected	—
`4.1(3f)`	affected	—
`4.1(3h)`	affected	—
`4.1(3i)`	affected	—
`4.1(3j)`	affected	—
`4.1(3k)`	affected	—
`4.2(1d)`	affected	—
`4.2(1c)`	affected	—
`4.2(1f)`	affected	—
`4.2(1i)`	affected	—
`4.2(1k)`	affected	—
`4.2(1l)`	affected	—
`4.2(1m)`	affected	—
`4.2(2a)`	affected	—
`4.2(2c)`	affected	—
`4.2(1n)`	affected	—
`4.2(2d)`	affected	—
`4.2(3b)`	affected	—
`4.2(2e)`	affected	—

Cisco

Cisco Firepower Extensible Operating System (FXOS)

affected

Version	Status	Constraints
`2.2.1.63`	affected	—
`2.2.1.66`	affected	—
`2.2.1.70`	affected	—
`2.2.2.17`	affected	—
`2.2.2.19`	affected	—
`2.2.2.24`	affected	—
`2.2.2.26`	affected	—
`2.2.2.28`	affected	—
`2.2.2.54`	affected	—
`2.2.2.60`	affected	—
`2.3.1.93`	affected	—
`2.3.1.91`	affected	—
`2.3.1.88`	affected	—
`2.3.1.75`	affected	—
`2.3.1.73`	affected	—
`2.3.1.66`	affected	—
`2.3.1.58`	affected	—
`2.3.1.56`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:cisco:firepower_9300_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:firepower_9300:-:*:*:*:*:*:*:*

Configuration 2 [-]

AND

cpe:2.3:o:cisco:firepower_4143_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:firepower_4145:-:*:*:*:*:*:*:*

Configuration 3 [-]

AND

cpe:2.3:o:cisco:firepower_4112_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:firepower_4112:-:*:*:*:*:*:*:*

Configuration 4 [-]

AND

OR	cpe:2.3:o:cisco:ucs_6324_fabric_interconnect_firmware::::::::
	cpe:2.3:o:cisco:ucs_6324_fabric_interconnect_firmware::::::::

cpe:2.3:h:cisco:ucs_6324_fabric_interconnect:-:*:*:*:*:*:*:*

Configuration 5 [-]

AND

cpe:2.3:o:cisco:firepower_4125_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:firepower_4125:-:*:*:*:*:*:*:*

Configuration 6 [-]

AND

cpe:2.3:o:cisco:firepower_4115:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:firepower_4115:-:*:*:*:*:*:*:*

Configuration 7 [-]

AND

OR	cpe:2.3:o:cisco:ucs_6332_fabric_interconnect_firmware::::::::
	cpe:2.3:o:cisco:ucs_6332_fabric_interconnect_firmware::::::::

cpe:2.3:h:cisco:ucs_6332_fabric_interconnect:-:*:*:*:*:*:*:*

Configuration 8 [-]

AND

OR	cpe:2.3:o:cisco:ucs_6332-16up_fabric_interconnect_firmware::::::::
	cpe:2.3:o:cisco:ucs_6332-16up_fabric_interconnect_firmware::::::::

cpe:2.3:h:cisco:ucs_6332-16up_fabric_interconnect:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2023-24379	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.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.682% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fp-ucsfi-snmp-dos-qtv69NAO

History

Jul 16, 2025 1:45 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.00405}`	epss `{'score': 0.00416}`

Jul 1, 2025 2:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Cisco Firepower 4112 Firepower 4112 Firmware Firepower 4115 Firepower 4125 Firepower 4125 Firmware Firepower 4143 Firmware Firepower 4145 Firepower 9300 Firepower 9300 Firmware Ucs 6324 Fabric Interconnect Ucs 6324 Fabric Interconnect Firmware Ucs 6332-16up Fabric Interconnect Ucs 6332-16up Fabric Interconnect Firmware Ucs 6332 Fabric Interconnect Ucs 6332 Fabric Interconnect Firmware

Weaknesses