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CVE-2026-4371

Опубликовано: 24 мар. 2026
Источник: nvd
CVSS3: 7.4
EPSS Низкий

Описание

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.

Уязвимые конфигурации

Конфигурация 1

Одно из

cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
Версия до 140.9.0 (исключая)
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
Версия до 149.0 (исключая)

EPSS

Процентиль: 20%
0.00285
Низкий

7.4 High

CVSS3

Дефекты

CWE-126

Связанные уязвимости

CVSS3: 7.4
ubuntu
3 месяца назад

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.

CVSS3: 8.2
redhat
3 месяца назад

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.

CVSS3: 7.4
debian
3 месяца назад

A malicious mail server could send malformed strings with negative len ...

CVSS3: 7.4
github
3 месяца назад

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 affects Thunderbird < 149 and Thunderbird < 140.9.

rocky
2 месяца назад

Important: thunderbird security update

EPSS

Процентиль: 20%
0.00285
Низкий

7.4 High

CVSS3

Дефекты

CWE-126