UBUNTU-CVE-2026-48852

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Source
https://ubuntu.com/security/CVE-2026-48852
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48852.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-48852
Upstream
  • CVE-2026-48852
Published
2026-05-25T21:16:00Z
Modified
2026-05-27T19:09:53Z
Severity
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

PuTTY 0.71 before 0.84 has an assertion failure in ECDSA signature verification.

References

Affected packages

Ubuntu:16.04:LTS
putty

Package

Name
putty
Purl
pkg:deb/ubuntu/putty?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.65-2
0.66-1
0.66-2
0.66-3
0.66-4
0.67-1
0.67-2
0.67-3build0.16.04.1
0.67-3+deb9u1build0.16.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "pterm",
            "binary_version": "0.67-3+deb9u1build0.16.04.1"
        },
        {
            "binary_name": "putty",
            "binary_version": "0.67-3+deb9u1build0.16.04.1"
        },
        {
            "binary_name": "putty-tools",
            "binary_version": "0.67-3+deb9u1build0.16.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48852.json"
Ubuntu:18.04:LTS
putty

Package

Name
putty
Purl
pkg:deb/ubuntu/putty?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.70-1
0.70-2
0.70-3
0.70-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "pterm",
            "binary_version": "0.70-4"
        },
        {
            "binary_name": "putty",
            "binary_version": "0.70-4"
        },
        {
            "binary_name": "putty-tools",
            "binary_version": "0.70-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48852.json"
Ubuntu:20.04:LTS
putty

Package

Name
putty
Purl
pkg:deb/ubuntu/putty?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.72-1
0.73-1
0.73-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "pterm",
            "binary_version": "0.73-2"
        },
        {
            "binary_name": "putty",
            "binary_version": "0.73-2"
        },
        {
            "binary_name": "putty-tools",
            "binary_version": "0.73-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48852.json"
Ubuntu:22.04:LTS
putty

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.75-3
0.76-1
0.76-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "pterm",
            "binary_version": "0.76-2"
        },
        {
            "binary_name": "putty",
            "binary_version": "0.76-2"
        },
        {
            "binary_name": "putty-tools",
            "binary_version": "0.76-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48852.json"
Ubuntu:24.04:LTS
putty

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.78-3
0.79-1
0.80-1
0.80-1build2
0.80-1build3
0.81-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "pterm",
            "binary_version": "0.81-1"
        },
        {
            "binary_name": "putty",
            "binary_version": "0.81-1"
        },
        {
            "binary_name": "putty-tools",
            "binary_version": "0.81-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48852.json"
Ubuntu:25.10
putty

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.83-2
0.83-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "pterm",
            "binary_version": "0.83-3"
        },
        {
            "binary_name": "putty",
            "binary_version": "0.83-3"
        },
        {
            "binary_name": "putty-tools",
            "binary_version": "0.83-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48852.json"
Ubuntu:26.04:LTS
putty

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.83-3
0.83-3build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "pterm",
            "binary_version": "0.83-3build1"
        },
        {
            "binary_name": "putty",
            "binary_version": "0.83-3build1"
        },
        {
            "binary_name": "putty-tools",
            "binary_version": "0.83-3build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48852.json"