CVE & CISA-KEV Catalog

CVE-2020-3200

HIGHEPSS 75th pctl
7.7
CVSS v3
NVD

Description

A vulnerability in the Secure Shell (SSH) server code of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. The vulnerability is due to an internal state not being represented correctly in the SSH state machine, which leads to an unexpected behavior. An attacker could exploit this vulnerability by creating an SSH connection to an affected device and using a specific traffic pattern that causes an error condition within that connection. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Exploit Intelligence

1.72%probability of exploitation in 30 days
75thpercentile

Elevated risk: more likely to be exploited than 75% of all known CVEs.

References

Related Vulnerabilities

Other CWE-371 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2020-3574High7.58.0%-Fix
CVE-2018-0282Medium6.82.0%--
CVE-2019-1977Medium6.81.5%--
CVE-2020-3422High7.51.3%--
CVE-2024-20455High8.60.7%--
CVE-2020-3385Medium6.50.5%-Fix

Common questions

How do I fix CVE-2020-3200?

No published fix for CVE-2020-3200 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

Is CVE-2020-3200 being actively exploited?

Not that we know of. CVE-2020-3200 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.7% is the estimated probability that it will be exploited in the next 30 days. That is higher than 75% of all scored CVEs.

How severe is CVE-2020-3200?

CVE-2020-3200 has a CVSS v3 base score of 7.7, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.