2634 matches found
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-2026-40684
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
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...
CVE-2026-40684
In Exim before 4.99.2, on systems using musl libc (not glibc), a vulnerability can crash the connection instance when malformed DNS PTR data is present. The issue arises from a dn_expand octal printing oddity in the handling of PTR records, as described in multiple sources. Affected software/comp...
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-2026-40685
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-2026-40686: 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...
Exim buffer error vulnerability
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-2026-40685
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-2026-40685
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-2026-40685: 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-2026-40684
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-2026-40687: 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 security vulnerabilities
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...
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...
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...
Exim buffer error vulnerability
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-2026-40686
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...