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CVE-2025-0510

Address of e-mail sender can be spoofed by malicious email

MEDIUM
6.5
CVSS Score
Published: February 4, 2025 at 01:58 PM UTC
Updated: June 17, 2026 at 08:26 AM UTC
1 product affected across 1 vendorThunderbird

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Thunderbird displayed an incorrect sender address if the From field of an email used the invalid group name syntax that is described in CVE-2024-49040. This vulnerability affects Thunderbird < 128.7 and Thunderbird < 135.

Affected

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

Thunderbird· Mozilla
95%
128.0.1 ≤ v < 128.7.0131.0 ≤ v < 135.0
Vendor states this is fixed in 128.7 (unaffected)
Affected range stops below 128.7.0, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 135 (unaffected)
Affected range stops below 135.0, 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 (3)

Permissions Required
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1940570
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2025-10/
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2025-11/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfoCWE-345

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