Is CVE-2020-6795 in the CISA KEV catalog?

No. CVE-2020-6795 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-6795?

CVE-2020-6795 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2020-6795?

CVE-2020-6795 has an EPSS score of 1.27% (66th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-6795?

Upgrade thunderbird on debian 11 to 1:68.5.0-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2020-6795

MEDIUM

6.5

CVSS v3

NVD

Description

When processing a message that contains multiple S/MIME signatures, a bug in the MIME processing code caused a null pointer dereference, leading to an unexploitable crash. This vulnerability affects Thunderbird < 68.5.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

thunderbirdDebian

Fixed in:1:68.5.0-1CVE-2020-6795

thunderbirdUbuntu

Fixed in:1:68.7.0+build1-0ubuntu0.16.04.2USN-4335-1

Fixed in:1:68.7.0+build1-0ubuntu0.18.04.1USN-4328-1

Mozilla Thunderbird (en-US)Windows application

Affected:68.5.0Fixed in:68.5.0Mozilla

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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.27%probability of exploitation in 30 days

66thpercentile

Moderate risk: more likely to be exploited than 66% of all known CVEs.

References

Vendor Advisory1

mozilla.org

Other references4

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.