USN-8040-1 (UBUNTU-CVE-2026-25506)
Vulnerability from osv_ubuntu – Published: 2026-02-12 18:08 – Updated: 2026-09-11 12:08 – Source website
VLAI
Summary
munge vulnerability
Details
Titouan Lazard discovered that MUNGE contained an exploitable buffer overflow in munged (the MUNGE authentication daemon). A local attacker could possibly use this issue to forge MUNGE credentials, leading to arbitrary code execution.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-25506",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:14.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libmunge2",
"binary_version": "0.5.11-1ubuntu1.1+esm1"
},
{
"binary_name": "munge",
"binary_version": "0.5.11-1ubuntu1.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "munge",
"purl": "pkg:deb/ubuntu/munge@0.5.11-1ubuntu1.1+esm1?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.5.11-1ubuntu1.1+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.5.10-1",
"0.5.10-1ubuntu1",
"0.5.11-1",
"0.5.11-1ubuntu1",
"0.5.11-1ubuntu1.1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-25506",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libmunge2",
"binary_version": "0.5.11-3ubuntu0.1+esm1"
},
{
"binary_name": "munge",
"binary_version": "0.5.11-3ubuntu0.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "munge",
"purl": "pkg:deb/ubuntu/munge@0.5.11-3ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.5.11-3ubuntu0.1+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.5.11-3",
"0.5.11-3ubuntu0.1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-25506",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libmunge2",
"binary_version": "0.5.13-1ubuntu0.1~esm1"
},
{
"binary_name": "munge",
"binary_version": "0.5.13-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "munge",
"purl": "pkg:deb/ubuntu/munge@0.5.13-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.5.13-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.5.12-2",
"0.5.13-1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-25506",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libmunge2",
"binary_version": "0.5.13-2ubuntu0.1~esm1"
},
{
"binary_name": "munge",
"binary_version": "0.5.13-2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "munge",
"purl": "pkg:deb/ubuntu/munge@0.5.13-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.5.13-2ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.5.13-2build1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-25506",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libmunge2",
"binary_version": "0.5.14-6ubuntu0.1"
},
{
"binary_name": "munge",
"binary_version": "0.5.14-6ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "munge",
"purl": "pkg:deb/ubuntu/munge@0.5.14-6ubuntu0.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.5.14-6ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.5.14-6"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-25506",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libmunge2",
"binary_version": "0.5.15-4ubuntu0.1"
},
{
"binary_name": "munge",
"binary_version": "0.5.15-4ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "munge",
"purl": "pkg:deb/ubuntu/munge@0.5.15-4ubuntu0.1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.5.15-4ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.5.15-2",
"0.5.15-3ubuntu1",
"0.5.15-4",
"0.5.15-4build1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-25506",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:25.10"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libmunge2",
"binary_version": "0.5.16-1ubuntu0.1"
},
{
"binary_name": "munge",
"binary_version": "0.5.16-1ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "munge",
"purl": "pkg:deb/ubuntu/munge@0.5.16-1ubuntu0.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.5.16-1ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.5.16-1"
]
}
],
"aliases": [],
"details": "Titouan Lazard discovered that MUNGE contained an exploitable buffer\noverflow in munged (the MUNGE authentication daemon). A local attacker\ncould possibly use this issue to forge MUNGE credentials, leading to\narbitrary code execution.",
"id": "USN-8040-1",
"modified": "2026-09-11T12:08:52Z",
"published": "2026-02-12T18:08:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8040-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-25506"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "munge vulnerability",
"upstream": [
"UBUNTU-CVE-2026-25506"
]
}
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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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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