CVE-2021-3751

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Source
https://cve.org/CVERecord?id=CVE-2021-3751
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3751.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-3751
Published
2021-09-15T07:15:06Z
Modified
2026-07-08T22:13:43Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

libmobi is vulnerable to Out-of-bounds Write

References

Affected packages

Git / github.com/bfabiszewski/libmobi

Affected ranges

Type
GIT
Repo
https://github.com/bfabiszewski/libmobi
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c814c4aba4e090fa32805ff8ff459df6c2c61b5c
Fixed
ab5bf0e37e540eac682a14e628853b918626e72b
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:libmobi_project:libmobi:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.7"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

v0.*
v0.2
v0.3
v0.4
v0.5
v0.6

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3751.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "120694252244805791903290417316973324711",
                "120333361470414790212041862905057810084",
                "242482985265602302095058247358560159784",
                "120221589808660705953910058901898346551",
                "253859431149654223752734219259169364840"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2021-3751-8edb6631",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/bfabiszewski/libmobi/commit/ab5bf0e37e540eac682a14e628853b918626e72b",
        "target": {
            "file": "src/buffer.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "280190109604768326930381359724459835257",
            "length": 576
        },
        "id": "CVE-2021-3751-a9163d0e",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/bfabiszewski/libmobi/commit/ab5bf0e37e540eac682a14e628853b918626e72b",
        "target": {
            "file": "src/buffer.c",
            "function": "mobi_buffer_move"
        }
    }
]
vanir_signatures_modified 
"2026-07-08T22:13:43Z"