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CVE-2023-20200

HIGH
Published 2023-08-23T18:20:09.900Z
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CVSS Score

V3.1
7.7
/10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.004
probability
of exploitation in the wild

There is a 0.4% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.601
Higher than 60.1% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Cisco

Cisco Unified Computing System (Managed)

Affected Versions:

3.1(1e) 3.1(1g) 3.1(1h) 3.1(1k) 3.1(1l) 3.1(2b) 3.1(2c) 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(2d) 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(4b) 4.0(4c) 4.0(4d) 4.0(4e) 4.0(4f) 4.0(4g) 4.0(4h) 4.0(4a) 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(2a) 4.1(1d) 4.1(1e) 4.1(2b) 4.1(3a) 4.1(3b) 4.1(2c) 4.1(3d) 4.1(3c) 4.1(3e) 4.1(3f) 4.1(3h) 4.1(3i) 4.1(3j) 4.1(3k) 4.2(1d) 4.2(1c) 4.2(1f) 4.2(1i) 4.2(1k) 4.2(1l) 4.2(1m) 4.2(2a) 4.2(2c) 4.2(1n) 4.2(2d) 4.2(3b) 4.2(2e)
Cisco

Cisco Firepower Extensible Operating System (FXOS)

Affected Versions:

2.2.1.63 2.2.1.66 2.2.1.70 2.2.2.17 2.2.2.19 2.2.2.24 2.2.2.26 2.2.2.28 2.2.2.54 2.2.2.60 2.3.1.93 2.3.1.91 2.3.1.88 2.3.1.75 2.3.1.73 2.3.1.66 2.3.1.58 2.3.1.56

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-vrx2-vjh6-fhxx

Advisory Details

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.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-20200
WEB https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fp-ucsfi-snmp-dos-qtv69NAO

Advisory provided by GitHub Security Advisory Database. Published: August 23, 2023, Modified: January 13, 2024

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fp-ucsfi-snmp-dos-qtv69NAO
Published: 2023-08-23T18:20:09.900Z
Last Modified: 2025-07-01T13:57:36.701Z
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