CVE-2026-40684: Incorrect Provision of Specified Functionality

In Exim before 4.99.2, on systems using musl libc not glibc, an attacker can crash the connection instance when malformed DNS data is present in PTR records. This is caused by a dnexpand oddity in octal printing...

CVE-2026-40686

In Exim before 4.99.2, when utf8 operators are enabled, there is an out-of-bounds read if large UTF-8 trailing characters are present malformed UTF-8 header data. Information might be divulged within an error message produced during handling of an unrelated e-mail message...

CVE-2026-40685

In Exim before 4.99.2, when JSON lookup is enabled, an out-of-bounds heap write can occur when a JSON operator encounters malformed JSON in an untrusted header, because of an incorrect implementation of \ skipping...

CVE-2026-40687

In Exim before 4.99.2, when the SPA authentication driver is used with an adversarial SPA resource, there can be an out-of-bounds write that crashes the connection instance, or erroneous data processing that divulges data from uninitialized heap memory...

Exim 缓冲区错误漏洞

Exim is an open-source message transfer agent MTA developed by Exim Software, running on Unix systems. It primarily handles the routing, forwarding, and delivery of emails. Versions of Exim prior to 4.99.2 contained a buffer error vulnerability. This vulnerability stemmed from the utf8 operator’s...

CVE-2026-40687: Missing Initialization of Resource

In Exim before 4.99.2, when the SPA authentication driver is used with an adversarial SPA resource, there can be an out-of-bounds write that crashes the connection instance, or erroneous data processing that divulges data from uninitialized heap memory...

Exim 安全漏洞

Exim is an open-source message transfer agent MTA developed by Exim Software, running on Unix systems. It primarily handles the routing, forwarding, and delivery of emails. Versions of Exim prior to 4.99.2 contained security vulnerabilities. These vulnerabilities stemmed from the SPA authenticati...

Exim 安全漏洞

Exim is an open-source message transfer agent MTA developed by Exim Foundation and running on Unix systems. It primarily handles the routing, forwarding, and delivery of emails. Prior to Exim 4.99.2, there was a security vulnerability. This vulnerability occurred due to an exception in the octal...

CVE-2026-40684

In Exim before 4.99.2, on systems using musl libc not glibc, an attacker can crash the connection instance when malformed DNS data is present in PTR records. This is caused by a dnexpand oddity in octal printing...

CVE-2026-40684

In Exim before 4.99.2, on systems using musl libc not glibc, an attacker can crash the connection instance when malformed DNS data is present in PTR records. This is caused by a dnexpand oddity in octal printing...

CVE-2026-40686: Out-of-bounds Read

In Exim before 4.99.2, when utf8 operators are enabled, there is an out-of-bounds read if large UTF-8 trailing characters are present malformed UTF-8 header data. Information might be divulged within an error message produced during handling of an unrelated e-mail message...

CVE-2026-40687

In Exim before 4.99.2, when the SPA authentication driver is used with an adversarial SPA resource, there can be an out-of-bounds write that crashes the connection instance, or erroneous data processing that divulges data from uninitialized heap memory...

Exim 缓冲区错误漏洞

Exim is an open-source message transfer agent MTA developed by Exim Software. It operates on Unix-based systems and is primarily responsible for routing, forwarding, and delivering emails. Prior to Exim 4.99.2, there was a buffer error vulnerability. This vulnerability stemmed from the JSON...

CVE-2026-40687

CVE-2026-40687 affects Exim before 4.99.2. When the SPA authentication driver is used with an adversarial SPA resource, an out-of-bounds write can crash the connection instance, or erroneous data processing can divulge data from uninitialized heap memory. Connected sources consistently describe t...

CVE-2026-40685: Incorrect Provision of Specified Functionality

In Exim before 4.99.2, when JSON lookup is enabled, an out-of-bounds heap write can occur when a JSON operator encounters malformed JSON in an untrusted header, because of an incorrect implementation of \ skipping...

CVE-2026-40686

In Exim before 4.99.2, when utf8 operators are enabled, there is an out-of-bounds read if large UTF-8 trailing characters are present malformed UTF-8 header data. Information might be divulged within an error message produced during handling of an unrelated e-mail message...

CVE-2026-40685

In Exim before 4.99.2, when JSON lookup is enabled, an out-of-bounds heap write can occur when a JSON operator encounters malformed JSON in an untrusted header, because of an incorrect implementation of \ skipping...

EUVD-2026-26443

In Exim before 4.99.2, when JSON lookup is enabled, an out-of-bounds heap write can occur when a JSON operator encounters malformed JSON in an untrusted header, because of an incorrect implementation of \ skipping...

CVE-2026-40686

In Exim before 4.99.2, when utf8 operators are enabled, there is an out-of-bounds read if large UTF-8 trailing characters are present malformed UTF-8 header data. Information might be divulged within an error message produced during handling of an unrelated e-mail message...

EUVD-2026-26442

In Exim before 4.99.2, on systems using musl libc not glibc, an attacker can crash the connection instance when malformed DNS data is present in PTR records. This is caused by a dnexpand oddity in octal printing...