cURL up to 8.17.0 Threaded LDAPS certificate validation

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in cURL up to 8.17.0. This affects an unknown part of the component Threaded LDAPS. Executing a manipulation can lead to certificate validation. This vulnerability is registered as CVE-2025-14017. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in cURL up to 8.17.0 and classified as critical. This vulnerability affects some unknown functionality of the component Threaded LDAPS. The manipulation with an unknown input leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

When doing multi-threaded LDAPS transfers (LDAP over TLS) with libcurl, changing TLS options in one thread would inadvertently change them globally and therefore possibly also affect other concurrently setup transfers. Disabling certificate verification for a specific transfer could unintentionally disable the feature for other threads as well.

The advisory is shared for download at seclists.org. This vulnerability was named CVE-2025-14017. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1587.003.

The vulnerability scanner Nessus provides a plugin with the ID 282309 (Linux Distros Unpatched Vulnerability : CVE-2025-14017), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 8.18.0 eliminates this vulnerability. The upgrade is hosted for download at curl.se. Applying the patch 39d1976b7f709a516e324333 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (282309) and CERT Bund (WID-SEC-2026-0030). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Amazon Linux 2
  • Fedora Linux
  • Ubuntu Linux
  • SUSE Linux
  • SUSE openSUSE
  • NetApp ActiveIQ Unified Manager
  • NetApp Data ONTAP
  • Open Source cURL
  • Tenable Security Nessus Network Monitor
  • Meinberg LANTIME
  • Open Source Notepad++
  • IBM AIX

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 282309
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-14017

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: cURL 8.18.0
Patch: 39d1976b7f709a516e324333

Timelineinfo

01/07/2026 Advisory disclosed
01/07/2026 +0 days VulDB entry created
05/03/2026 +115 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: seclists.org
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2025-14017 (🔒)
GCVE (CVE): GCVE-0-2025-14017
GCVE (VulDB): GCVE-100-339880
CERT Bund: WID-SEC-2026-0030 - cURL: Mehrere Schwachstellen

Entryinfo

Created: 01/07/2026 13:13
Updated: 05/03/2026 01:50
Changes: 01/07/2026 13:13 (54), 01/07/2026 13:14 (2), 01/08/2026 09:52 (2), 01/09/2026 12:54 (1), 01/09/2026 22:09 (7), 01/20/2026 12:54 (1), 02/13/2026 16:39 (1), 05/03/2026 01:50 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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