A vulnerability in the interactions between the DHCP and TFTP features for Cisco Small Business 300 Series (Sx300) Managed Switches could allow an unauthenticated, remote attacker to cause the device to become low on system memory, which in turn could lead to an unexpected reload of the device and result in a denial of service (DoS) condition on an affected device. The vulnerability is due to a failure to free system memory when an unexpected DHCP request is received. An attacker could exploit this vulnerability by sending a crafted DHCP packet to the targeted device. A successful exploit could allow the attacker to cause an unexpected reload of the device.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.6, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 54 products from cisco, from cisco, from cisco and 51 others, organizations running these solutions should prioritize assessment and patching.
First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2019-05-16T00:29:00.260
2024-11-21T04:37:26.363
Modified
CVSSv3.1: 8.6 (HIGH)
AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | sf302-08pp_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sf302-08pp | - | No |
| Operating System | cisco | sf302-08mpp_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sf302-08mpp | - | No |
| Operating System | cisco | sg300-10pp_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sg300-10pp | - | No |
| Operating System | cisco | sg300-10mpp_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sg300-10mpp | - | No |
| Operating System | cisco | sf300-24pp_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sf300-24pp | - | No |
| Operating System | cisco | sf300-48pp_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sf300-48pp | - | No |
| Operating System | cisco | sg300-28pp_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sg300-28pp | - | No |
| Operating System | cisco | sf300-08_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sf300-08 | - | No |
| Operating System | cisco | sf300-48p_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sf300-48p | - | No |
| Operating System | cisco | sg300-10mp_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sg300-10mp | - | No |
| Operating System | cisco | sg300-10p_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sg300-10p | - | No |
| Operating System | cisco | sg300-10_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sg300-10 | - | No |
| Operating System | cisco | sg300-28p_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sg300-28p | - | No |
| Operating System | cisco | sf300-24p_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sf300-24p | - | No |
| Operating System | cisco | sf302-08mp_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sf302-08mp | - | No |
| Operating System | cisco | sg300-28_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sg300-28 | - | No |
| Operating System | cisco | sf300-48_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sf300-48 | - | No |
| Operating System | cisco | sg300-20_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sg300-20 | - | No |
| Operating System | cisco | sf302-08p_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sf302-08p | - | No |
| Operating System | cisco | sg300-52_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sg300-52 | - | No |
| Operating System | cisco | sf300-24_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sf300-24 | - | No |
| Operating System | cisco | sf302-08_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sf302-08 | - | No |
| Operating System | cisco | sf300-24mp_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sf300-24mp | - | No |
| Operating System | cisco | sg300-10sfp_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sg300-10sfp | - | No |
| Operating System | cisco | sg300-28mp_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sg300-28mp | - | No |
| Operating System | cisco | sg300-52p_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sg300-52p | - | No |
| Operating System | cisco | sg300-52mp_firmware | < 1.4.10.6 | Yes |
| Hardware | cisco | sg300-52mp | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.