CVE-2021-22925
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.
- CVSS 3.1
- 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - EPSS
- 5.4% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-25)
- CWEs
- CWE-908, CWE-200
- Published
- Modified
- Record from
- the NVD, synced
Affected
- apple:mac_os_x
- apple:macos
- fedoraproject:fedora
- haxx:curl
- netapp:cloud_backup
- netapp:clustered_data_ontap
- netapp:h300e_firmware
- netapp:h300s_firmware
- netapp:h410s_firmware
- netapp:h500e_firmware
- netapp:h500s_firmware
- netapp:h700e_firmware
- netapp:h700s_firmware
- netapp:hci_management_node
- netapp:solidfire
- oracle:mysql_server
- oracle:peoplesoft_enterprise_peopletools
- siemens:sinec_infrastructure_network_services
- siemens:sinema_remote_connect_server
- splunk:universal_forwarder