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CVE-2020-15646

MEDIUM
5.9
CVSS Score
Published: October 8, 2020 at 01:37 PM UTC
Updated: June 17, 2026 at 02:56 AM UTC
1 product affected across 1 vendorThunderbird

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Severity
MEDIUM5.9
Exploit prediction
EPSS 1.0%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Thunderbird· Mozilla
95%
v < 68.10.0
Affected range stops below 68.10.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCIssue TrackingPermissions RequiredVendor Advisory
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1606610
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2020-26/

CVSS

5.9MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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