Vulnerability Details : CVE-2023-20082

A vulnerability in Cisco IOS XE Software for Cisco Catalyst 9300 Series Switches could allow an authenticated, local attacker with level-15 privileges or an unauthenticated attacker with physical access to the device to execute persistent code at boot time and break the chain of trust. This vulnerability is due to errors that occur when retrieving the public release key that is used for image signature verification. An attacker could exploit this vulnerability by modifying specific variables in the Serial Peripheral Interface (SPI) flash memory of an affected device. A successful exploit could allow the attacker to execute persistent code on the underlying operating system. Note: In Cisco IOS XE Software releases 16.11.1 and later, the complexity of an attack using this vulnerability is high. However, an attacker with level-15 privileges could easily downgrade the Cisco IOS XE Software on a device to a release that would lower the attack complexity.
Published 2023-03-23 17:15:15
Updated 2023-03-30 20:35:48
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Exploit prediction scoring system (EPSS) score for CVE-2023-20082

Probability of exploitation activity in the next 30 days: 0.05%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 18 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2023-20082

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
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CWE ids for CVE-2023-20082

References for CVE-2023-20082

Products affected by CVE-2023-20082

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