CVE-2020-15646: mozilla thunderbird
Vulnerability summary
CVE-2020-15646 is a medium (CVSS 5.9) vulnerability in mozilla thunderbird. EPSS estimates a 0.96% chance of exploitation in the next 30 days, higher than 60.9% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 6Timeline
- 08-10-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
If an attacker intercepts Thunderbird's initial attempt to perform automatic account setup using the Microsoft Exchange autodiscovery mechanism, and the attacker sends a crafted response, then Thunderbird sends username and password over https to a server controlled by the attacker. This vulnerability affects Thunderbird < 68.10.0.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.96%
Chance of exploitation in the next 30 days
Percentile
61%
Versus all other CVEs
30-day change
0.00 pp
From 0.96% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Debian1 product
- thunderbird< 1:68.10.0-1
Mozilla1 product
- thunderbird≥ unspecified, < 68.10.0 | < 68.10.0
Ubuntu1 product
- thunderbird< 1:68.10.0+build1-0ubuntu0.16.04.1 | < 1:68.10.0+build1-0ubuntu0.18.04.1 | < 1:68.10.0+build1-0ubuntu0.20.04.1
3 vendors · 3 products
References
6 links- bugzilla.mozilla.org/show_bug.cgi?id=1606610X Refsource MISCIssue TrackingPermissions RequiredVendor Advisory
