CVE & CISA-KEV Catalog

CVE-2025-14819

MEDIUM
5.3
CVSS v3
NVD

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.

CWE-295Improper Certificate Validation

How to fix

Remediation Available
curlDebian
Fixed in:8.18.0~rc3-1CVE-2025-14819
curlUbuntu
Fixed in:7.81.0-1ubuntu1.22USN-8062-1
Fixed in:8.5.0-2ubuntu10.7USN-8062-1
Fixed in:8.14.1-2ubuntu1.1USN-8062-1
libcurl3-gnutlsUbuntu
Fixed in:7.81.0-1ubuntu1.22USN-8062-1
libcurl3-nssUbuntu
Fixed in:7.81.0-1ubuntu1.22USN-8062-1
libcurl3t64-gnutlsUbuntu
Fixed in:8.5.0-2ubuntu10.7USN-8062-1
Fixed in:8.14.1-2ubuntu1.1USN-8062-1
libcurl4Ubuntu
Fixed in:7.81.0-1ubuntu1.22USN-8062-1
libcurl4-gnutls-devUbuntu
Fixed in:7.81.0-1ubuntu1.22USN-8062-1
Fixed in:8.5.0-2ubuntu10.7USN-8062-1
Fixed in:8.14.1-2ubuntu1.1USN-8062-1
libcurl4-nss-devUbuntu
Fixed in:7.81.0-1ubuntu1.22USN-8062-1
libcurl4-openssl-devUbuntu
Fixed in:7.81.0-1ubuntu1.22USN-8062-1
Fixed in:8.5.0-2ubuntu10.7USN-8062-1
Fixed in:8.14.1-2ubuntu1.1USN-8062-1
libcurl4t64Ubuntu
Fixed in:8.5.0-2ubuntu10.7USN-8062-1
Fixed in:8.14.1-2ubuntu1.1USN-8062-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityNone
AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploit Intelligence

0.68%probability of exploitation in 30 days
48thpercentile

Moderate risk: more likely to be exploited than 48% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-295 (Improper Certificate Validation) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2015-4000Low3.7100%-Fix
CVE-2020-0601High8.189%KEVFix
CVE-2009-3555Critical9.887%-Fix
CVE-2022-26923High8.883%KEVFix
CVE-2023-27823Critical9.853%--
CVE-2022-42979High8.824%--
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-20.