Is CVE-2020-5956 in the CISA KEV catalog?

No. CVE-2020-5956 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-5956?

CVE-2020-5956 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2020-5956?

CVE-2020-5956 has an EPSS score of 0.81% (52th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-5956?

Upgrade insydeh2o to 05.42.11 or later.

CVE & CISA-KEV Catalog

CVE-2020-5956

HIGH

7.5

CVSS v3

NVD

Description

An issue was discovered in SdLegacySmm in Insyde InsydeH2O with kernel 5.1 before 05.15.11, 5.2 before 05.25.11, 5.3 before 05.34.11, and 5.4 before 05.42.11. The software SMI handler allows untrusted external input because it does not verify CommBuffer.

CWE-20Improper Input Validation

How to fix

Remediation Available

insydeh2oNVD

Affected:>= 5.4, < 05.42.11Fixed in:05.42.11CVE-2020-5956derived 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 RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.81%probability of exploitation in 30 days

52ndpercentile

Moderate risk: more likely to be exploited than 52% of all known CVEs.

References

Vendor Advisory1

insyde.com

Third-Party Advisory1

security.netapp.com

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

Embed a live status badge for CVE-2020-5956

Markdown

[![CVE-2020-5956](https://tridentstack.com/cve/badge/CVE-2020-5956.svg)](https://tridentstack.com/cve/CVE-2020-5956)

HTML

<a href="https://tridentstack.com/cve/CVE-2020-5956"><img src="https://tridentstack.com/cve/badge/CVE-2020-5956.svg" alt="CVE-2020-5956"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.