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CVE-2023-20200

MEDIUM
6.3
CVSS Score
Published: August 23, 2023 at 06:20 PM UTC
Updated: June 17, 2026 at 05:29 AM UTC
17 products affected across 1 vendorFirepower 4115Firepower 9300 FirmwareFirepower 4125 Firmware

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Firepower 4112 Firmware· Cisco
95%
All versions
cisco-firepower-4112 (same device)
Firepower 4115· Cisco
95%
All versions
Firepower 4125 Firmware· Cisco
95%
All versions
cisco-firepower-4125 (same device)
Firepower 4143 Firmware· Cisco
95%
All versions
cisco-firepower-4145 (environment)
Firepower 9300 Firmware· Cisco
95%
All versions
cisco-firepower-9300 (same device)
Ucs 6324 Fabric Interconnect Firmware· Cisco
95%
4.1 ≤ v < 4.1(3l)4.2 ≤ v < 4.2(3d)
Affected range stops below 4.1(3l), so it looks safe — our inference, not a vendor statement
Affected range stops below 4.2(3d), so it looks safe — our inference, not a vendor statement
cisco-ucs-6324-fabric-interconnect (same device)
Ucs 6332-16up Fabric Interconnect Firmware· Cisco
95%
4.1 ≤ v < 4.1(3l)4.2 ≤ v < 4.2(3b)
Affected range stops below 4.1(3l), so it looks safe — our inference, not a vendor statement
Affected range stops below 4.2(3b), so it looks safe — our inference, not a vendor statement
cisco-ucs-6332-16up-fabric-interconnect (same device)
Ucs 6332 Fabric Interconnect Firmware· Cisco
95%
4.1 ≤ v < 4.1(3l)4.2 ≤ v ≤ 4.2(3b)
Affected range stops below 4.1(3l), so it looks safe — our inference, not a vendor statement
cisco-ucs-6332-fabric-interconnect (same device)
Firepower Extensible Operating System· Cisco
60%
2.2.1.632.2.1.662.2.1.702.2.2.172.2.2.192.2.2.242.2.2.262.2.2.282.2.2.542.2.2.602.3.1.562.3.1.582.3.1.662.3.1.732.3.1.752.3.1.882.3.1.912.3.1.93
Unified Computing System· Cisco
60%
3.1(1e)3.1(1g)3.1(1h)3.1(1k)3.1(1l)3.1(2b)3.1(2c)3.1(2d)3.1(2e)3.1(2f)3.1(2g)3.1(2h)3.1(3a)3.1(3b)3.1(3c)3.1(3d)3.1(3e)3.1(3f)3.1(3h)3.1(3j)3.1(3k)3.1(3l)3.2(1d)3.2(2b)3.2(2c)3.2(2d)3.2(2e)3.2(2f)3.2(3a)3.2(3b)3.2(3d)3.2(3e)3.2(3g)3.2(3h)3.2(3i)3.2(3j)3.2(3k)3.2(3l)3.2(3n)3.2(3o)3.2(3p)4.0(1a)4.0(1b)4.0(1c)4.0(1d)4.0(2a)4.0(2b)4.0(2d)4.0(2e)4.0(4a)4.0(4b)4.0(4c)4.0(4d)4.0(4e)4.0(4f)4.0(4g)4.0(4h)4.0(4i)4.0(4k)4.0(4l)4.0(4m)4.0(4n)4.0(4o)4.1(1a)4.1(1b)4.1(1c)4.1(1d)4.1(1e)4.1(2a)4.1(2b)4.1(2c)4.1(3a)4.1(3b)4.1(3c)4.1(3d)4.1(3e)4.1(3f)4.1(3h)4.1(3i)4.1(3j)4.1(3k)4.2(1c)4.2(1d)4.2(1f)4.2(1i)4.2(1k)4.2(1l)4.2(1m)4.2(1n)4.2(2a)4.2(2c)4.2(2d)4.2(2e)4.2(3b)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fp-ucsfi-snmp-dos-qtv69NAO

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-835CWE-732

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