Is CVE-2020-20266 in the CISA KEV catalog?

No. CVE-2020-20266 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-20266?

CVE-2020-20266 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2020-20266?

CVE-2020-20266 has an EPSS score of 2.10% (79th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-20266?

Upgrade routeros to 6.47 or later.

CVE & CISA-KEV Catalog

CVE-2020-20266

MEDIUMEPSS 79th pctl

6.5

CVSS v3

NVD

Description

Mikrotik RouterOs before 6.47 (stable tree) suffers from a memory corruption vulnerability in the /nova/bin/dot1x process. An authenticated remote attacker can cause a Denial of Service (NULL pointer dereference).

CWE-476NULL Pointer Dereference CWE-787Out-of-bounds Write

How to fix

Remediation Available

routerosNVD

Affected:< 6.47Fixed in:6.47CVE-2020-20266derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.10%probability of exploitation in 30 days

79thpercentile

Elevated risk: more likely to be exploited than 79% of all known CVEs.

References

Exploit1

seclists.org

Third-Party Advisory1

github.com

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	Fix

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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.