What is CVE-2020-3387?

CVE-2020-3387 is a high-severity vulnerability in Cisco 1100-4g Integrated Services Router, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2020-07-16.

How severe is CVE-2020-3387?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2020-3387 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in Cisco 1100-4g Integrated Services Router

CVE-2020-3387

A vulnerability in Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to execute code with root privileges on an affected system. The vulnerability is due to insufficient input sanitization during user authentication processing. An attacker could exploit this vulnerability by sending a crafted response to the Cisco SD-WAN vManage Software. A successful exploit could allow the attacker to access the software and execute commands they should not be authorized to execute.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.130 (96.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
psirt@cisco.com (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-3387?: CVE-2020-3387 is a high-severity vulnerability in Cisco 1100-4g Integrated Services Router, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2020-07-16.
How severe is CVE-2020-3387?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2020-3387 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.