ubuntu-cve-2025-15536
Vulnerability from osv_ubuntu
Published
2026-01-18 09:15
Modified
2026-05-26 22:38
Summary
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.
Severity
5.3 (Medium)
5.5 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "opencc",
"purl": "pkg:deb/ubuntu/opencc@0.4.3-2build1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.4.3-2build1"
]
},
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "opencc",
"purl": "pkg:deb/ubuntu/opencc@1.0.4-5ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.4-5ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.0.4-5"
]
},
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "opencc",
"purl": "pkg:deb/ubuntu/opencc@1.0.5+git20190530-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.5+git20190530-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.0.5-2",
"1.0.5+git20190530-1",
"1.0.5+git20190530-1build1"
]
},
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "opencc",
"purl": "pkg:deb/ubuntu/opencc@1.1.3+ds1-3ubuntu3.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1.3+ds1-3ubuntu3.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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": "1.1.7+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"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "opencc",
"purl": "pkg:deb/ubuntu/opencc@1.1.7+ds1-1ubuntu0.1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1.7+ds1-1ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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": "1.1.9+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"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "opencc",
"purl": "pkg:deb/ubuntu/opencc@1.1.9+ds1-2ubuntu0.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1.9+ds1-2ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.1.9+ds1-1build1",
"1.1.9+ds1-2"
]
}
],
"aliases": [],
"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.",
"id": "UBUNTU-CVE-2025-15536",
"modified": "2026-05-26T22:38:58Z",
"published": "2026-01-18T09:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-15536"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-15536"
},
{
"type": "REPORT",
"url": "https://github.com/BYVoid/OpenCC/pull/1005"
},
{
"type": "REPORT",
"url": "https://github.com/oneafter/1222/blob/main/repro"
},
{
"type": "REPORT",
"url": "https://vuldb.com/?ctiid.341708"
},
{
"type": "REPORT",
"url": "https://vuldb.com/?id.341708"
},
{
"type": "REPORT",
"url": "https://vuldb.com/?submit.733347"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7972-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7972-2"
}
],
"related": [
"USN-7972-1",
"USN-7972-2"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "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",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2025-15536"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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