CVE-2025-67896

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Source
https://cve.org/CVERecord?id=CVE-2025-67896
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-67896.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-67896
Downstream
Published
2025-12-14T04:00:24.337Z
Modified
2026-07-15T01:49:04.417544126Z
Severity
  • 7.0 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L CVSS Calculator
Summary
[none]
Details

Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer overflow because database records are cast directly to internal structures without validation.

Database specific 
{
    "cna_assigner": "mitre",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "4.99"
                },
                {
                    "fixed": "4.99.1"
                }
            ],
            "source": "AFFECTED_FIELD"
        },
        {
            "extracted_events": [
                {
                    "introduced": "4.99"
                },
                {
                    "fixed": "4.99.1"
                }
            ],
            "source": "CPE_FIELD"
        },
        {
            "extracted_events": [
                {
                    "fixed": "4.99.1"
                }
            ],
            "source": "DESCRIPTION"
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/67xxx/CVE-2025-67896.json",
    "cwe_ids": [
        "CWE-122"
    ]
}
References

Affected packages

Git / github.com/exim/exim

Affected ranges

Type
GIT
Repo
https://github.com/exim/exim
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
d46a6727798fc48d1756190a6d46d19216348c25
Database specific 
{
    "cpe": "cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.99.1"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

Other
DEVEL_PDKIM_START
exim-4_50
exim-4_51
exim-4_52
exim-4_53
exim-4_54
exim-4_61
exim-4_62
exim-4_63
exim-4_64
exim-4_65
exim-4_66
exim-4_67
exim-4_68
exim-4_69
exim-4_70
exim-4_70_RC3
exim-4_70_RC4
exim-4_71
exim-4_72
exim-4_72_RC1
exim-4_72_RC2
exim-4_73
exim-4_73_RC00
exim-4_73_RC1
exim-4_74
exim-4_74_RC1
exim-4_75
exim-4_75_RC1
exim-4_75_RC2
exim-4_75_RC3
exim-4_76
exim-4_76_RC1
exim-4_76_RC2
exim-4_77
exim-4_77_RC1
exim-4_77_RC2
exim-4_77_RC3
exim-4_77_RC4
exim-4_80
exim-4_80_RC1
exim-4_80_RC2
exim-4_80_RC3
exim-4_80_RC4
exim-4_80_RC5
exim-4_80_RC6
exim-4_80_RC7
exim-4_82
exim-4_82_RC1
exim-4_82_RC2
exim-4_82_RC3
exim-4_82_RC4
exim-4_82_RC5
exim-4_83
exim-4_83_RC1
exim-4_83_RC2
exim-4_83_RC3
exim-4_84
exim-4_84_RC1
exim-4_84_RC2
exim-4_85
exim-4_85_RC1
exim-4_85_RC2
exim-4_85_RC3
exim-4_85_RC4
exim-4_86
exim-4_86_RC1
exim-4_86_RC2
exim-4_86_RC3
exim-4_86_RC4
exim-4_86_RC5
exim-4_87
exim-4_87_RC1
exim-4_87_RC2
exim-4_87_RC3
exim-4_87_RC4
exim-4_87_RC5
exim-4_87_RC6
exim-4_87_RC7
exim-4_88
exim-4_88_RC1
exim-4_88_RC2
exim-4_88_RC3
exim-4_88_RC4
exim-4_88_RC5
exim-4_88_RC6
exim-4_89_RC1
exim-4_89_RC3
exim-4_90
exim-4_90_RC1
exim-4_90_RC2
exim-4_90_RC3
exim-4_90_RC4
exim-4_91
exim-4_91_RC1
exim-4_91_RC2
exim-4_91_RC3
exim-4_91_RC4
exim-4_94_RC0
exim-4.*
exim-4.90devstart
exim-4.92
exim-4.92-RC1
exim-4.92-RC2
exim-4.92-RC3
exim-4.92-RC4
exim-4.92-RC5
exim-4.92-RC6
exim-4.92-jgh
exim-4.93
exim-4.93-RC0
exim-4.93-RC1
exim-4.93-RC2
exim-4.93-RC3
exim-4.93-RC4
exim-4.93-RC5
exim-4.93-RC6
exim-4.93-RC7
exim-4.94
exim-4.94-RC1
exim-4.94-RC2
exim-4.95
exim-4.95-RC0
exim-4.95-RC1
exim-4.95-RC2
exim-4.96
exim-4.96-RC0
exim-4.96-RC1
exim-4.96-RC2
exim-4.97
exim-4.97-RC0
exim-4.97-RC1
exim-4.97-RC2
exim-4.98
exim-4.98-RC0
exim-4.98-RC1
exim-4.98-RC2
exim-4.98-RC3
exim-4.99
exim-4.99-RC1
exim-4.99-RC2
exim-4.99-RC3
exim-4.99-RC4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-67896.json"