UBUNTU-CVE-2025-15536

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Source
https://ubuntu.com/security/CVE-2025-15536
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15536.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-15536
Upstream
Downstream
Related
Published
2026-01-18T09:15:00Z
Modified
2026-05-26T22:59:14Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 1.9 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A weakness has been identified in BYVoid OpenCC up to 1.1.9. This vulnerability affects the function opencc::MaxMatchSegmentation of the file src/MaxMatchSegmentation.cpp. This manipulation causes heap-based buffer overflow. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. Patch name: 345c9a50ab07018f1b4439776bad78a0d40778ec. To fix this issue, it is recommended to deploy a patch.

References

Affected packages

Ubuntu:16.04:LTS
opencc

Package

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

Affected ranges

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

Affected versions

0.*
0.4.3-2build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libopencc1",
            "binary_version": "0.4.3-2build1"
        },
        {
            "binary_name": "opencc",
            "binary_version": "0.4.3-2build1"
        },
        {
            "binary_name": "python-opencc",
            "binary_version": "0.4.3-2build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15536.json"
Ubuntu:22.04:LTS
opencc

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.1.3+ds1-3ubuntu3.1

Affected versions

1.*
1.1.1+git20200624+ds2-10ubuntu3
1.1.3+ds1-3ubuntu2
1.1.3+ds1-3ubuntu3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libopencc-data",
            "binary_version": "1.1.3+ds1-3ubuntu3.1"
        },
        {
            "binary_name": "libopencc1.1",
            "binary_version": "1.1.3+ds1-3ubuntu3.1"
        },
        {
            "binary_name": "opencc",
            "binary_version": "1.1.3+ds1-3ubuntu3.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15536.json"
Ubuntu:24.04:LTS
opencc

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.1.7+ds1-1ubuntu0.1

Affected versions

1.*
1.1.6+ds1-1
1.1.7+ds1-1
1.1.7+ds1-1build1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libopencc-data",
            "binary_version": "1.1.7+ds1-1ubuntu0.1"
        },
        {
            "binary_name": "libopencc1.1",
            "binary_version": "1.1.7+ds1-1ubuntu0.1"
        },
        {
            "binary_name": "opencc",
            "binary_version": "1.1.7+ds1-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15536.json"
Ubuntu:25.10
opencc

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.1.9+ds1-2ubuntu0.1

Affected versions

1.*
1.1.9+ds1-1build1
1.1.9+ds1-2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libopencc-data",
            "binary_version": "1.1.9+ds1-2ubuntu0.1"
        },
        {
            "binary_name": "libopencc1.1",
            "binary_version": "1.1.9+ds1-2ubuntu0.1"
        },
        {
            "binary_name": "opencc",
            "binary_version": "1.1.9+ds1-2ubuntu0.1"
        },
        {
            "binary_name": "python3-opencc",
            "binary_version": "1.1.9+ds1-2ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15536.json"
Ubuntu:Pro:18.04:LTS
opencc

Package

Name
opencc
Purl
pkg:deb/ubuntu/opencc?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.0.4-5ubuntu0.1~esm1

Affected versions

1.*
1.0.4-5

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libopencc2",
            "binary_version": "1.0.4-5ubuntu0.1~esm1"
        },
        {
            "binary_name": "libopencc2-data",
            "binary_version": "1.0.4-5ubuntu0.1~esm1"
        },
        {
            "binary_name": "opencc",
            "binary_version": "1.0.4-5ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15536.json"
Ubuntu:Pro:20.04:LTS
opencc

Package

Name
opencc
Purl
pkg:deb/ubuntu/opencc?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.0.5+git20190530-1ubuntu0.1~esm1

Affected versions

1.*
1.0.5-2
1.0.5+git20190530-1
1.0.5+git20190530-1build1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libopencc2",
            "binary_version": "1.0.5+git20190530-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libopencc2-data",
            "binary_version": "1.0.5+git20190530-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "opencc",
            "binary_version": "1.0.5+git20190530-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15536.json"