{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "state": "PUBLISHED",
        "cveId": "CVE-2021-22925",
        "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "assignerShortName": "hackerone",
        "dateUpdated": "2026-04-16T16:36:24.090Z",
        "dateReserved": "2021-01-06T00:00:00.000Z",
        "datePublished": "2021-08-05T00:00:00.000Z"
    },
    "containers": {
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                "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
                "shortName": "hackerone",
                "dateUpdated": "2022-12-19T00:00:00.000Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "curl supports the `-t` command line option, known as `CURLOPT_TELNETOPTIONS`in libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending `NEW_ENV` variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application."
                }
            ],
            "affected": [
                {
                    "vendor": "n/a",
                    "product": "https://github.com/curl/curl",
                    "versions": [
                        {
                            "version": "curl 7.7 to and including 7.77.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://hackerone.com/reports/1223882"
                },
                {
                    "name": "FEDORA-2021-5d21b90a30",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/"
                },
                {
                    "name": "20210921 APPLE-SA-2021-09-20-8 Additional information for APPLE-SA-2021-09-13-4 Security Update 2021-005 Catalina",
                    "tags": [
                        "mailing-list"
                    ],
                    "url": "http://seclists.org/fulldisclosure/2021/Sep/40"
                },
                {
                    "name": "20210921 APPLE-SA-2021-09-20-7 Additional information for APPLE-SA-2021-09-13-3 macOS Big Sur 11.6",
                    "tags": [
                        "mailing-list"
                    ],
                    "url": "http://seclists.org/fulldisclosure/2021/Sep/39"
                },
                {
                    "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
                },
                {
                    "url": "https://security.netapp.com/advisory/ntap-20210902-0003/"
                },
                {
                    "url": "https://support.apple.com/kb/HT212805"
                },
                {
                    "url": "https://support.apple.com/kb/HT212804"
                },
                {
                    "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
                },
                {
                    "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
                },
                {
                    "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf"
                },
                {
                    "name": "GLSA-202212-01",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://security.gentoo.org/glsa/202212-01"
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "lang": "en",
                            "description": "Information Disclosure (CWE-200)",
                            "cweId": "CWE-200"
                        }
                    ]
                }
            ]
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-03T18:58:26.060Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://hackerone.com/reports/1223882",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "name": "FEDORA-2021-5d21b90a30",
                        "tags": [
                            "vendor-advisory",
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                        ],
                        "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/"
                    },
                    {
                        "name": "20210921 APPLE-SA-2021-09-20-8 Additional information for APPLE-SA-2021-09-13-4 Security Update 2021-005 Catalina",
                        "tags": [
                            "mailing-list",
                            "x_transferred"
                        ],
                        "url": "http://seclists.org/fulldisclosure/2021/Sep/40"
                    },
                    {
                        "name": "20210921 APPLE-SA-2021-09-20-7 Additional information for APPLE-SA-2021-09-13-3 macOS Big Sur 11.6",
                        "tags": [
                            "mailing-list",
                            "x_transferred"
                        ],
                        "url": "http://seclists.org/fulldisclosure/2021/Sep/39"
                    },
                    {
                        "url": "https://www.oracle.com/security-alerts/cpuoct2021.html",
                        "tags": [
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                        ]
                    },
                    {
                        "url": "https://security.netapp.com/advisory/ntap-20210902-0003/",
                        "tags": [
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                    },
                    {
                        "url": "https://support.apple.com/kb/HT212805",
                        "tags": [
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                    },
                    {
                        "url": "https://support.apple.com/kb/HT212804",
                        "tags": [
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                    },
                    {
                        "url": "https://www.oracle.com/security-alerts/cpujan2022.html",
                        "tags": [
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                    },
                    {
                        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf",
                        "tags": [
                            "x_transferred"
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                    },
                    {
                        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf",
                        "tags": [
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                    },
                    {
                        "name": "GLSA-202212-01",
                        "tags": [
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                            "x_transferred"
                        ],
                        "url": "https://security.gentoo.org/glsa/202212-01"
                    }
                ]
            },
            {
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 5.3,
                            "attackVector": "NETWORK",
                            "baseSeverity": "MEDIUM",
                            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                            "integrityImpact": "NONE",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "NONE",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "LOW"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-04-16T16:36:17.820310Z",
                                "id": "CVE-2021-22925",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-04-16T16:36:24.090Z"
                }
            }
        ]
    }
}