VDB-294717 · CVE-2025-0665 · Nessus 215219

libcURL up to 8.11.1 File Descriptor multiple releases of same resource or handle

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.2	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in libcURL up to 8.11.1 and classified as critical. Impacted is an unknown function of the component File Descriptor Handler. Performing a manipulation results in multiple releases of same resource or handle. This vulnerability is reported as CVE-2025-0665. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in libcURL up to 8.11.1. This affects an unknown part of the component File Descriptor Handler. The manipulation with an unknown input leads to a multiple releases of same resource or handle vulnerability. CWE is classifying the issue as CWE-1341. The product attempts to close or release a resource or handle more than once, without any successful open between the close operations. The impact remains unknown. The summary by CVE is:

libcurl would wrongly close the same eventfd file descriptor twice when taking down a connection channel after having completed a threaded name resolve.

The weakness was disclosed by Christian Heusel. The advisory is shared at curl.se. This vulnerability is uniquely identified as CVE-2025-0665 since 01/23/2025. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 215219 (Curl < 8.12.0 Double Close (CVE-2025-0665)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (215219) and CERT Bund (WID-SEC-2025-0270). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

SUSE Linux
IBM AIX
Dell NetWorker
Dell Avamar
Open Source cURL
NetApp Data ONTAP
Tenable Security Nessus Network Monitor
Splunk Splunk Enterprise

Productinfo

Type

Network Utility Software

Name

libcURL

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

ADP CISA Base Score: 7.0
ADP CISA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Multiple releases of same resource or handle
CWE: CWE-1341
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 215219
Nessus Name: Curl < 8.12.0 Double Close (CVE-2025-0665)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/23/2025 🔍
02/05/2025 +13 days 🔍
02/05/2025 +0 days 🔍
03/17/2026 +405 days 🔍

Sourcesinfo

Advisory: curl.se
Researcher: Christian Heusel
Status: Not defined

CVE: CVE-2025-0665 (🔍)
GCVE (CVE): GCVE-0-2025-0665
GCVE (VulDB): GCVE-100-294717
CERT Bund: WID-SEC-2025-0270 - cURL: Mehrere Schwachstellen

Entryinfo

Created: 02/05/2025 10:56
Updated: 03/17/2026 19:53
Changes: 02/05/2025 10:56 (53), 02/10/2025 22:09 (2), 03/07/2025 13:22 (1), 08/03/2025 11:40 (7), 03/17/2026 19:53 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.