CVE-2021-22898
curl 7.7 through 7.76.1 suffers from an information disclosure when the `-t` command line option, known as `CURLOPT_TELNETOPTIONS` in libcurl, is used to send variable=content pairs to TELNET servers. Due to a flaw in the option parser for sending NEW_ENV variables, libcurl could be made to pass on uninitialized data from a stack based buffer to the server, resulting in potentially revealing sensitive internal information to the server using a clear-text network protocol.
- CVSS 3.1
- 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - EPSS
- 4.5% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-25)
- CWEs
- CWE-909, CWE-200
- Published
- Modified
- Record from
- the NVD, synced
Affected
- debian:debian_linux
- fedoraproject:fedora
- haxx:curl
- oracle:communications_cloud_native_core_binding_support_function
- oracle:communications_cloud_native_core_network_function_cloud_native_environment
- oracle:communications_cloud_native_core_network_repository_function
- oracle:communications_cloud_native_core_network_slice_selection_function
- oracle:communications_cloud_native_core_service_communication_proxy
- oracle:essbase
- oracle:mysql_server
- siemens:sinec_infrastructure_network_services
- splunk:universal_forwarder