CVE-2021-1353
moderate-risk
Published 2021-01-20
A vulnerability in the IPv4 protocol handling of Cisco StarOS could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a memory leak that occurs during packet processing. An attacker could exploit this vulnerability by sending a series of crafted IPv4 packets through an affected device. A successful exploit could allow the attacker to exhaust the available memory and cause an unexpected restart of the npusim process, leading to a DoS condition on the affected device.
Do I need to act?
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0.52% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.8/10
Medium
NETWORK
/ LOW complexity
Affected Products (2)
Virtualized Packet Core-Single Instance
Affected Vendors
References (2)
31
/ 100
moderate-risk
Severity
22/34 · High
Exploitability
2/34 · Minimal
Exposure
7/34 · Low