{"id":"CVE-2021-22925","revision":"e95134524e3e4765968aa1f8de7962e0","records":[{"revision":"e95134524e3e4765968aa1f8de7962e0","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2021-22925","aliases":[],"title":"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, libcur…","description":"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.","state":0,"publishedAt":"2021-08-05T00:00:00+00:00","modifiedAt":"2026-10-14T11:08:19.129+00:00","affected":[{"ecosystem":"Vendor product","name":"https://github.com/curl/curl","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"n/a\",\n                    \"product\": \"https://github.com/curl/curl\",\n                    \"versions\": [\n                        {\n                            \"version\": \"curl 7.7 to and including 7.77.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://hackerone.com/reports/1223882","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/","http://seclists.org/fulldisclosure/2021/Sep/40","http://seclists.org/fulldisclosure/2021/Sep/39","https://www.oracle.com/security-alerts/cpuoct2021.html","https://security.netapp.com/advisory/ntap-20210902-0003/","https://support.apple.com/kb/HT212805","https://support.apple.com/kb/HT212804","https://www.oracle.com/security-alerts/cpujan2022.html","https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf","https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf","https://security.gentoo.org/glsa/202212-01"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2021-22925","license":"CVE Program Terms of Use","key":"cve-program:CVE-2021-22925","identifiers":["CVE-2021-22925"]},"retained":false,"historicalAffected":[]}],"coverage":[]}