CVE-2025-10966

curl's code for managing SSH connections when SFTP was done using the wolfSSH powered backend was flawed and missed host verification mechanisms. This prevents curl from detecting MITM attackers and more.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://curl.se/docs/CVE-2025-10966.html	Patch Vendor Advisory
https://curl.se/docs/CVE-2025-10966.json	Vendor Advisory
https://hackerone.com/reports/3355218	Exploit Issue Tracking Third Party Advisory
http://www.openwall.com/lists/oss-security/2025/11/05/2	Mailing List Patch Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-253495.html

Configurations

Configuration 1 (hide)

cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*

History

19 Oct 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) El código de curl para gestionar conexiones SSH cuando SFTP se realizaba usando el backend impulsado por wolfSSH era defectuoso y carecía de mecanismos de verificación de host. Esto impide que curl detecte atacantes MitM y más.

Information

Published : 2025-11-07 08:15

Updated : 2026-10-19 13:10

NVD link : CVE-2025-10966

Mitre link : CVE-2025-10966

CVE.ORG link : CVE-2025-10966

JSON object : View

Products Affected

haxx

curl

CWE

CWE-322

Key Exchange without Entity Authentication

NVD-CWE-noinfo

{"id": "CVE-2025-10966", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-10966", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2025-11-10T20:26:03.531168Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "affected": [{"source": "2499f714-1537-4658-8207-48ae4bb9eae9", "affectedData": [{"vendor": "curl", "product": "curl", "versions": [{"status": "affected", "version": "7.69.0", "lessThan": "8.14.2", "versionType": "semver"}, {"status": "affected", "version": "8.15.0", "lessThan": "8.16.1", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"repo": "https://github.com/curl/curl.git", "vendor": "curl", "product": "curl", "versions": [{"status": "affected", "version": "6773c7ca65cf2183295e56603f9b86a5ce816a06", "lessThan": "b011e3fcfb06d6c0278595ee2ee297036fbe9793", "versionType": "git"}], "defaultStatus": "unaffected"}, {"vendor": "curl", "product": "curl", "versions": [{"status": "affected", "version": "8.16.0"}, {"status": "affected", "version": "8.15.0"}, {"status": "affected", "version": "8.14.1"}, {"status": "affected", "version": "8.14.0"}, {"status": "affected", "version": "8.13.0"}, {"status": "affected", "version": "8.12.1"}, {"status": "affected", "version": "8.12.0"}, {"status": "affected", "version": "8.11.1"}, {"status": "affected", "version": "8.11.0"}, {"status": "affected", "version": "8.10.1"}, {"status": "affected", "version": "8.10.0"}, {"status": "affected", "version": "8.9.1"}, {"status": "affected", "version": "8.9.0"}, {"status": "affected", "version": "8.8.0"}, {"status": "affected", "version": "8.7.1"}, {"status": "affected", "version": "8.7.0"}, {"status": "affected", "version": "8.6.0"}, {"status": "affected", "version": "8.5.0"}, {"status": "affected", "version": "8.4.0"}, {"status": "affected", "version": "8.3.0"}, {"status": "affected", "version": "8.2.1"}, {"status": "affected", "version": "8.2.0"}, {"status": "affected", "version": "8.1.2"}, {"status": "affected", "version": "8.1.1"}, {"status": "affected", "version": "8.1.0"}, {"status": "affected", "version": "8.0.1"}, {"status": "affected", "version": "8.0.0"}, {"status": "affected", "version": "7.88.1"}, {"status": "affected", "version": "7.88.0"}, {"status": "affected", "version": "7.87.0"}, {"status": "affected", "version": "7.86.0"}, {"status": "affected", "version": "7.85.0"}, {"status": "affected", "version": "7.84.0"}, {"status": "affected", "version": "7.83.1"}, {"status": "affected", "version": "7.83.0"}, {"status": "affected", "version": "7.82.0"}, {"status": "affected", "version": "7.81.0"}, {"status": "affected", "version": "7.80.0"}, {"status": "affected", "version": "7.79.1"}, {"status": "affected", "version": "7.79.0"}, {"status": "affected", "version": "7.78.0"}, {"status": "affected", "version": "7.77.0"}, {"status": "affected", "version": "7.76.1"}, {"status": "affected", "version": "7.76.0"}, {"status": "affected", "version": "7.75.0"}, {"status": "affected", "version": "7.74.0"}, {"status": "affected", "version": "7.73.0"}, {"status": "affected", "version": "7.72.0"}, {"status": "affected", "version": "7.71.1"}, {"status": "affected", "version": "7.71.0"}, {"status": "affected", "version": "7.70.0"}, {"status": "affected", "version": "7.69.1"}, {"status": "affected", "version": "7.69.0"}], "defaultStatus": "unaffected"}]}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "affectedData": [{"vendor": "Siemens", "product": "RUGGEDCOM RST2428P", "versions": [{"status": "affected", "version": "0", "lessThan": "V4.0", "versionType": "custom"}], "defaultStatus": "unknown"}]}], "published": "2025-11-07T08:15:39.617", "references": [{"url": "https://curl.se/docs/CVE-2025-10966.html", "tags": ["Patch", "Vendor Advisory"], "source": "2499f714-1537-4658-8207-48ae4bb9eae9"}, {"url": "https://curl.se/docs/CVE-2025-10966.json", "tags": ["Vendor Advisory"], "source": "2499f714-1537-4658-8207-48ae4bb9eae9"}, {"url": "https://hackerone.com/reports/3355218", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "source": "2499f714-1537-4658-8207-48ae4bb9eae9"}, {"url": "http://www.openwall.com/lists/oss-security/2025/11/05/2", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-253495.html", "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "2499f714-1537-4658-8207-48ae4bb9eae9", "description": [{"lang": "en", "value": "CWE-322"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "curl's code for managing SSH connections when SFTP was done using the wolfSSH\npowered backend was flawed and missed host verification mechanisms.\n\nThis prevents curl from detecting MITM attackers and more."}, {"lang": "es", "value": "El c\u00f3digo de curl para gestionar conexiones SSH cuando SFTP se realizaba usando el backend impulsado por wolfSSH era defectuoso y carec\u00eda de mecanismos de verificaci\u00f3n de host. Esto impide que curl detecte atacantes MitM y m\u00e1s."}], "lastModified": "2026-10-19T13:10:00.110", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8305F329-73B7-4DFC-9EA2-AD77D31E14A9", "versionEndExcluding": "8.17.0", "versionStartIncluding": "7.69.0"}], "operator": "OR"}]}], "sourceIdentifier": "2499f714-1537-4658-8207-48ae4bb9eae9"}