Multiple vulnerabilities in the Cisco IOx application environment of Cisco 809 and 829 Industrial Integrated Services Routers (Industrial ISRs) and Cisco 1000 Series Connected Grid Routers (CGR1000) that are running Cisco IOS Software could allow an attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
Published 2020-06-03 18:15:22
Updated 2021-10-19 19:38:32
View at NVD,   CVE.org
Vulnerability category: OverflowInput validationExecute codeDenial of service

Exploit prediction scoring system (EPSS) score for CVE-2020-3257

0.07%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 29 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-3257

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.8
MEDIUM AV:A/AC:L/Au:N/C:N/I:P/A:P
6.5
4.9
NIST
8.1
HIGH CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
2.8
5.2
Cisco Systems, Inc.
8.1
HIGH CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
2.8
5.2
NIST

CWE ids for CVE-2020-3257

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: ykramarz@cisco.com (Secondary)
  • The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-3257

Products affected by CVE-2020-3257

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