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CVE-2025-14819— OpenSSL partial chain store policy bypass

Quick assessment

Affected
curl curl
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

curl是cURL开源的一款用于从服务器传输数据或向服务器传输数据的工具。 curl存在安全漏洞，该漏洞源于libcurl错误重用CA存储缓存，可能导致接受非预期信任链。

AI Predicted 6.1 Difficulty: Moderate EPSS 0.76% · P54

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 35

VendorProduct Version RangeStatus
curl curl 7.87.0< 8.14.2 affected
8.15.0< 8.16.1 affected
8.17.0< 8.18.0 affected
3c16697ebd796f799227be293e8689aec5f8190d< cd046f6c93b39d673a58c18648d8906e954c4f5d affected
8.17.0 affected
8.16.0 affected
8.15.0 affected
8.14.1 affected
… +27 more rows
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I. Basic Information for CVE-2025-14819

Vulnerability Information
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Vulnerability Title
OpenSSL partial chain store policy bypass
Source: CVE Program / CVE List V5
Vulnerability Description
When doing TLS related transfers with reused easy or multi handles and altering the `CURLSSLOPT_NO_PARTIALCHAIN` option, libcurl could accidentally reuse a CA store cached in memory for which the partial chain option was reversed. Contrary to the user's wishes and expectations. This could make libcurl find and accept a trust chain that it otherwise would not.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
curl 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
curl是cURL开源的一款用于从服务器传输数据或向服务器传输数据的工具。 curl存在安全漏洞，该漏洞源于libcurl错误重用CA存储缓存，可能导致接受非预期信任链。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
curl curl 7.87.0 ~ 8.14.2 -
curl curl 3c16697ebd796f799227be293e8689aec5f8190d ~ cd046f6c93b39d673a58c18648d8906e954c4f5d -
curl curl 8.17.0 -

II. Public POCs for CVE-2025-14819

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III. Intelligence Information for CVE-2025-14819

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Other References for CVE-2025-14819 (2)

Same Patch Batch · curl · 2026-01-08 · 6 CVEs total

CVE-2025-15224 libssh key passphrase bypass without agent set
CVE-2025-15079 libssh global known_hosts override
CVE-2025-14524 bearer token leak on cross-protocol redirect
CVE-2025-14017 broken TLS options for threaded LDAPS
CVE-2025-13034 No QUIC certificate pinning with GnuTLS

IV. Related Vulnerabilities

Same product: curl
Same vendor: curl
Same weakness: CWE-295

V. Comments for CVE-2025-14819

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