MUNGE is an authentication service for creating and validating user credentials. From 0.5 to 0.5.17, local attacker can exploit a buffer overflow vulnerability in munged (the MUNGE authentication daemon) to leak cryptographic key material from process memory. With the leaked key material, the attacker could forge arbitrary MUNGE credentials to impersonate any user (including root) to services that rely on MUNGE for authentication. The vulnerability allows a buffer overflow by sending a crafted message with an oversized address length field, corrupting munged's internal state and enabling extraction of the MAC subkey used for credential verification. This vulnerability is fixed in 0.5.18.
Metrics
Affected Vendors & Products
References
History
Wed, 25 Feb 2026 17:45:00 +0000
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Debian
Debian debian Linux |
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| CPEs | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | |
| Vendors & Products |
Debian
Debian debian Linux |
Wed, 25 Feb 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Opensuse
Opensuse munge |
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| CPEs | cpe:2.3:a:opensuse:munge:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Opensuse
Opensuse munge |
Tue, 17 Feb 2026 19:30:00 +0000
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| References |
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Thu, 12 Feb 2026 00:15:00 +0000
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| References |
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| Metrics |
threat_severity
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threat_severity
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Tue, 10 Feb 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Dun
Dun munge |
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| Vendors & Products |
Dun
Dun munge |
Tue, 10 Feb 2026 21:30:00 +0000
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| References |
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Tue, 10 Feb 2026 20:15:00 +0000
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| Metrics |
ssvc
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Tue, 10 Feb 2026 19:15:00 +0000
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| Description | MUNGE is an authentication service for creating and validating user credentials. From 0.5 to 0.5.17, local attacker can exploit a buffer overflow vulnerability in munged (the MUNGE authentication daemon) to leak cryptographic key material from process memory. With the leaked key material, the attacker could forge arbitrary MUNGE credentials to impersonate any user (including root) to services that rely on MUNGE for authentication. The vulnerability allows a buffer overflow by sending a crafted message with an oversized address length field, corrupting munged's internal state and enabling extraction of the MAC subkey used for credential verification. This vulnerability is fixed in 0.5.18. | |
| Title | MUNGE has a buffer overflow in message unpacking allows key leakage and credential forgery | |
| Weaknesses | CWE-787 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-02-10T18:55:57.708Z
Updated: 2026-02-17T18:17:47.022Z
Reserved: 2026-02-02T18:21:42.486Z
Link: CVE-2026-25506
Updated: 2026-02-17T18:17:47.022Z
Status : Analyzed
Published: 2026-02-10T19:16:03.720
Modified: 2026-02-25T17:39:03.170
Link: CVE-2026-25506