CVE-2025-10966 | missing SFTP host verification with wolfSSH

Exp

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.

Published: 2025-11-07 Last update: 2026-06-02 Assigner: 2499f714-1537-4658-8207-48ae4bb9eae9 Source: 2499f714-1537-4658-8207-48ae4bb9eae9
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-10966 is rated Exploit Available (50/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.02%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2025-10966

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2025-10966

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-07 — 0.02% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-10966

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 1.4 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-10966

GitHub Security Advisory for CVE-2025-10966

GHSA-5gff-h54g-38r2 · Severity: medium — curl's code for managing SSH connections when SFTP was done using the wolfSSH powered backend was...

OS Trackers for CVE-2025-10966

vendor priority summary link
alpine — CVE-2025-10966: 1 source package rows (curl); 277 state rows across 5 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 1, open 276. https://security.alpinelinux.org/vuln/CVE-2025-10966
debian unimportant CVE-2025-10966 unimportant priority: Debian including 1 source packages (curl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. https://security-tracker.debian.org/tracker/CVE-2025-10966
redhat medium — https://access.redhat.com/security/cve/CVE-2025-10966
suse medium CVE-2025-10966 severity moderate: SUSE including 14 source package names (curl, curl-8.17.0-1.1, …), 132 product×package rows across 43 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS, … (43 product lines)): Known Not Affected 123, Fixed 9. https://www.suse.com/security/cve/CVE-2025-10966/
ubuntu low CVE-2025-10966 low priority: Ubuntu including 1 source packages (curl), 9 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): not-affected 8, released 1. https://ubuntu.com/security/CVE-2025-10966

Affected software / configurations for CVE-2025-10966

Vendor Product Version Raw CPE
haxx curl >= 7.69.0, < 8.17.0 cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*

References for CVE-2025-10966

cvelogic Threat Intelligence