CVE-2021-29957
MEDIUM
4.3
CVSS Score
Published: June 24, 2021 at 01:16 PM UTC
Updated: June 17, 2026 at 03:48 AM UTC
1 product affected across 1 vendorThunderbird
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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.9%
Description
If a MIME encoded email contains an OpenPGP inline signed or encrypted message part, but also contains an additional unprotected part, Thunderbird did not indicate that only parts of the message are protected. This vulnerability affects Thunderbird < 78.10.2.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 78.10.2
Affected range stops below 78.10.2, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCExploitPatchVendor Advisory
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1673241x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2021-22/CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-Other
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