Is CVE-2020-3552 in the CISA KEV catalog?

No. CVE-2020-3552 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-3552?

CVE-2020-3552 has a CVSS v3 base score of 7.4 (HIGH).

What is the EPSS score for CVE-2020-3552?

CVE-2020-3552 has an EPSS score of 0.49% (38th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-3552?

Upgrade access points to 16.12.4a or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2020-3552

HIGH

7.4

CVSS v3

NVD

Description

A vulnerability in the Ethernet packet handling of Cisco Aironet Access Points (APs) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by connecting as a wired client to the Ethernet interface of an affected device and sending a series of specific packets within a short time frame. A successful exploit could allow the attacker to cause a NULL pointer access that results in a reload of the affected device.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

access pointsNVD

Affected:< 16.12.4aFixed in:16.12.4aCVE-2020-3552derived from NVD

business access pointsNVD

Affected:>= 10.0, < 10.1.1.0Fixed in:10.1.1.0CVE-2020-3552derived from NVD

wireless lan controllerNVD

Affected:>= 8.6, < 8.10.105.0Fixed in:8.10.105.0CVE-2020-3552derived 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 VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.49%probability of exploitation in 30 days

38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Vendor Advisory1

tools.cisco.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.