USN-8270-1

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Source
https://ubuntu.com/security/notices/USN-8270-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8270-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8270-1
Related
Published
2026-05-12T14:53:27Z
Modified
2026-05-20T16:04:05.564595804Z
Summary
exim4 vulnerability
Details

It was discovered that Exim incorrectly handled BDAT body parsing. A remote attacker could use this issue to cause Exim to crash, resulting in a denial of service, or possibly execute arbitrary code.

References

Affected packages

Ubuntu:22.04:LTS / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.95-4ubuntu2.8

Affected versions

4.*
4.94.2-7ubuntu2
4.95-2ubuntu2
4.95-4ubuntu1
4.95-4ubuntu2
4.95-4ubuntu2.1
4.95-4ubuntu2.2
4.95-4ubuntu2.3
4.95-4ubuntu2.4
4.95-4ubuntu2.5
4.95-4ubuntu2.6
4.95-4ubuntu2.7

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "4.95-4ubuntu2.8",
            "binary_name": "exim4"
        },
        {
            "binary_version": "4.95-4ubuntu2.8",
            "binary_name": "exim4-base"
        },
        {
            "binary_version": "4.95-4ubuntu2.8",
            "binary_name": "exim4-config"
        },
        {
            "binary_version": "4.95-4ubuntu2.8",
            "binary_name": "exim4-daemon-heavy"
        },
        {
            "binary_version": "4.95-4ubuntu2.8",
            "binary_name": "exim4-daemon-light"
        },
        {
            "binary_version": "4.95-4ubuntu2.8",
            "binary_name": "eximon4"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:22.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8270-1.json"

Ubuntu:24.04:LTS / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.97-4ubuntu4.5

Affected versions

4.*
4.96-17ubuntu2
4.96-17ubuntu2.1
4.97-3ubuntu1
4.97-4ubuntu1
4.97-4ubuntu3
4.97-4ubuntu4
4.97-4ubuntu4.1
4.97-4ubuntu4.2
4.97-4ubuntu4.3
4.97-4ubuntu4.4

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "4.97-4ubuntu4.5",
            "binary_name": "exim4"
        },
        {
            "binary_version": "4.97-4ubuntu4.5",
            "binary_name": "exim4-base"
        },
        {
            "binary_version": "4.97-4ubuntu4.5",
            "binary_name": "exim4-config"
        },
        {
            "binary_version": "4.97-4ubuntu4.5",
            "binary_name": "exim4-daemon-heavy"
        },
        {
            "binary_version": "4.97-4ubuntu4.5",
            "binary_name": "exim4-daemon-light"
        },
        {
            "binary_version": "4.97-4ubuntu4.5",
            "binary_name": "eximon4"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:24.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8270-1.json"

Ubuntu:25.10 / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.98.2-1ubuntu2.2

Affected versions

4.*
4.98.1-1ubuntu2
4.98.2-1ubuntu1
4.98.2-1ubuntu2
4.98.2-1ubuntu2.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "4.98.2-1ubuntu2.2",
            "binary_name": "exim4"
        },
        {
            "binary_version": "4.98.2-1ubuntu2.2",
            "binary_name": "exim4-base"
        },
        {
            "binary_version": "4.98.2-1ubuntu2.2",
            "binary_name": "exim4-config"
        },
        {
            "binary_version": "4.98.2-1ubuntu2.2",
            "binary_name": "exim4-daemon-heavy"
        },
        {
            "binary_version": "4.98.2-1ubuntu2.2",
            "binary_name": "exim4-daemon-light"
        },
        {
            "binary_version": "4.98.2-1ubuntu2.2",
            "binary_name": "eximon4"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:25.10"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8270-1.json"

Ubuntu:26.04:LTS / exim4

Package

Name
exim4
Purl
pkg:deb/ubuntu/exim4?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.99.1-1ubuntu1.2

Affected versions

4.*
4.98.2-1ubuntu2
4.99-4ubuntu1
4.99.1-1ubuntu1
4.99.1-1ubuntu1.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "4.99.1-1ubuntu1.2",
            "binary_name": "exim4"
        },
        {
            "binary_version": "4.99.1-1ubuntu1.2",
            "binary_name": "exim4-base"
        },
        {
            "binary_version": "4.99.1-1ubuntu1.2",
            "binary_name": "exim4-config"
        },
        {
            "binary_version": "4.99.1-1ubuntu1.2",
            "binary_name": "exim4-daemon-heavy"
        },
        {
            "binary_version": "4.99.1-1ubuntu1.2",
            "binary_name": "exim4-daemon-light"
        },
        {
            "binary_version": "4.99.1-1ubuntu1.2",
            "binary_name": "eximon4"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:26.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8270-1.json"