Signal is active with 1 mentions in latest observed window
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NVD description
A malicious mail server could send malformed strings with negative lengths, causing the parser to read memory outside the buffer. If a mail server or connection to a mail server were compromised, an attacker could cause the parser to malfunction, potentially crashing Thunderbird or leaking sensitive data. This vulnerability was fixed in Thunderbird 149 and Thunderbird 140.9.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
CVE-2026-4371 Memory Corruption Vulnerability in Mozilla Thunderbird Mail Parser Before 149 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-4371
Post summary
The entry announces CVE‑2026‑4371 as a memory corruption issue affecting Mozilla Thunderbird's mail parser before version 149, without any PoC, exploit, or mitigation details.
2 of 2 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | mozilla | thunderbird | - | - | - |
| App | mozilla | thunderbird | - | - | - |