Is CVE-2020-35471 in the CISA KEV catalog?

No. CVE-2020-35471 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-35471?

CVE-2020-35471 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2020-35471?

CVE-2020-35471 has an EPSS score of 2.36% (82th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-35471?

Upgrade envoy to 1.16.1 or later.

CVE & CISA-KEV Catalog

CVE-2020-35471

HIGHEPSS 82th pctl

7.5

CVSS v3

NVD

Description

Envoy before 1.16.1 mishandles dropped and truncated datagrams, as demonstrated by a segmentation fault for a UDP packet size larger than 1500.

How to fix

Remediation Available

envoyNVD

Affected:< 1.16.1Fixed in:1.16.1CVE-2020-35471derived 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

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.36%probability of exploitation in 30 days

82ndpercentile

Elevated risk: more likely to be exploited than 82% of all known CVEs.

References

Patch2

Exploit1

github.com

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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.