CVE-2020-20276

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Source
https://cve.org/CVERecord?id=CVE-2020-20276
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-20276.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-20276
Published
2020-12-18T19:15:14.047Z
Modified
2026-07-08T12:44:27.873943Z
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

An unauthenticated stack-based buffer overflow vulnerability in common.c's handle_PORT in uftpd FTP server versions 2.10 and earlier can be abused to cause a crash and could potentially lead to remote code execution.

References

Affected packages

Git / github.com/troglobit/uftpd

Affected ranges

Type
GIT
Repo
https://github.com/troglobit/uftpd
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
e82248683ed7d53be1e01526f7b2a53dde545ef9
Fixed
0fb2c031ce0ace07cc19cd2cb2143c4b5a63c9dd
Database specific 
{
    "cpe": "cpe:2.3:a:troglobit:uftpd:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.10"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

v0.*
v0.1
v1.*
v1.0
v1.1
v1.2
v1.3
v1.4
v1.5
v1.6
v1.7
v1.8
v2.*
v2.10
v2.5
v2.6
v2.7
v2.8
v2.9

Database specific

vanir_signatures_modified 
"2026-07-08T12:44:27Z"
vanir_signatures 
[
    {
        "signature_type": "Line",
        "deprecated": false,
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "305627866150381828683865241657895014322",
                "12937131316666879073544403319990601086",
                "173866264394877993175631420443797992491",
                "250823014807152732547613692800473923267"
            ]
        },
        "signature_version": "v1",
        "source": "https://github.com/troglobit/uftpd/commit/0fb2c031ce0ace07cc19cd2cb2143c4b5a63c9dd",
        "id": "CVE-2020-20276-a2bfc361",
        "target": {
            "file": "src/ftpcmd.c"
        }
    },
    {
        "signature_type": "Function",
        "deprecated": false,
        "digest": {
            "length": 898.0,
            "function_hash": "73284893654735530245356761491877463198"
        },
        "signature_version": "v1",
        "source": "https://github.com/troglobit/uftpd/commit/0fb2c031ce0ace07cc19cd2cb2143c4b5a63c9dd",
        "id": "CVE-2020-20276-d12c122b",
        "target": {
            "function": "handle_PORT",
            "file": "src/ftpcmd.c"
        }
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-20276.json"