Mbed TLS up to 3.6.4 timing discrepancy

CVSS Meta Temp Score
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CTI Interest Score
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2.6$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Mbed TLS up to 3.6.4. The impacted element is an unknown function. Such manipulation leads to timing discrepancy. This vulnerability is listed as CVE-2025-59438. There is no available exploit.

Detailsinfo

A vulnerability was found in Mbed TLS up to 3.6.4. It has been rated as problematic. Affected by this issue is an unknown code block. The manipulation with an unknown input leads to a timing discrepancy vulnerability. Using CWE to declare the problem leads to CWE-208. Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not. Impacted is confidentiality.

The advisory is available at mbed-tls.readthedocs.io. This vulnerability is handled as CVE-2025-59438 since 09/16/2025. The exploitation is known to be difficult. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 271649 (Linux Distros Unpatched Vulnerability : CVE-2025-59438), 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 (271649) and EUVD (EUVD-2025-35171). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.6
VulDB Meta Temp Score: 2.6

VulDB Base Score: 2.6
VulDB Temp Score: 2.6
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: Timing discrepancy
CWE: CWE-208 / CWE-203 / CWE-200
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 271649
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-59438

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/16/2025 CVE reserved
10/21/2025 +35 days Advisory disclosed
10/21/2025 +0 days VulDB entry created
10/28/2025 +7 days VulDB entry last update

Sourcesinfo

Advisory: mbed-tls.readthedocs.io
Status: Confirmed

CVE: CVE-2025-59438 (🔒)
GCVE (CVE): GCVE-0-2025-59438
GCVE (VulDB): GCVE-100-329138
EUVD: 🔒

Entryinfo

Created: 10/21/2025 17:01
Updated: 10/28/2025 07:38
Changes: 10/21/2025 17:01 (50), 10/21/2025 19:56 (1), 10/28/2025 07:38 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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