6.5

CVE-2020-6795: mozilla thunderbird NULL Pointer Dereference

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2020-6795DEBIAN-CVE-2020-6795
Published 02-03-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-6795 is a medium (CVSS 6.5) NULL Pointer Dereference vulnerability in mozilla thunderbird. EPSS estimates a 1.31% chance of exploitation in the next 30 days, higher than 70.1% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
1.31%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 12 · Related 5
DLA-2104-1DSA-4625-1MGASA-2020-0091OPENSUSE-SU-2020:0231-1OPENSUSE-SU-2024:10601-1RHSA-2020:0565

Timeline

  1. 02-03-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.31%

Chance of exploitation in the next 30 days

Percentile

70%

Versus all other CVEs

30-day change

0.00 pp

From 1.31% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.31%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • thunderbird< 1:68.5.0-1
Mozilla1 product
Ubuntu1 product
  • thunderbird< 1:68.7.0+build1-0ubuntu0.16.04.2 | < 1:68.7.0+build1-0ubuntu0.18.04.1

3 vendors · 3 products

References

11 links
Show all 11 references