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Vulnerability details: VCID-dpb7-ns9a-9fdc
Vulnerability ID VCID-dpb7-ns9a-9fdc
Aliases CVE-2021-22897
Summary curl 7.61.0 through 7.76.1 suffers from exposure of data element to wrong session due to a mistake in the code for CURLOPT_SSL_CIPHER_LIST when libcurl is built to use the Schannel TLS library. The selected cipher set was stored in a single "static" variable in the library, which has the surprising side-effect that if an application sets up multiple concurrent transfers, the last one that sets the ciphers will accidentally control the set used by all transfers. In a worst-case scenario, this weakens transport security significantly.
Status Published
Exploitability 0.5
Weighted Severity 4.8
Risk 2.4
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-488 Exposure of Data Element to Wrong Session
CWE-295 Improper Certificate Validation
CWE-668 Exposure of Resource to Wrong Sphere
System Score Found at
cvssv3 3.7 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-22897.json
epss 0.00379 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00379 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00379 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.00761 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.01081 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.01081 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.01081 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.01081 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.01081 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.01081 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.01081 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
epss 0.01081 https://api.first.org/data/v1/epss?cve=CVE-2021-22897
cvssv3.1 Low https://curl.se/docs/CVE-2021-22897.html
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-22897
cvssv3.1 5.3 https://nvd.nist.gov/vuln/detail/CVE-2021-22897
archlinux Low https://security.archlinux.org/AVG-2016
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-22897.json
https://api.first.org/data/v1/epss?cve=CVE-2021-22897
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
https://curl.se/docs/CVE-2021-22897.html
https://github.com/curl/curl/commit/bbb71507b7bab52002f9b1e0880bed6a32834511
https://hackerone.com/reports/1172857
https://security.netapp.com/advisory/ntap-20210727-0007/
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.oracle.com//security-alerts/cpujul2021.html
1964904 https://bugzilla.redhat.com/show_bug.cgi?id=1964904
AVG-2016 https://security.archlinux.org/AVG-2016
cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:solidfire\,_enterprise_sds_\&_hci_storage_node:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:solidfire\,_enterprise_sds_\&_hci_storage_node:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.11.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.11.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.8.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_service_communication_proxy:1.15.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_service_communication_proxy:1.15.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:essbase:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:essbase:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*
cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*
cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*
CVE-2021-22897 https://nvd.nist.gov/vuln/detail/CVE-2021-22897
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-22897.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-22897
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-22897
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.58823
EPSS Score 0.00379
Published At Aug. 1, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:32:31.048867+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.21/main.json 37.0.0