Espressif esptool 4.6.2 inadequate encryption

HistoryDiffrelatejsonxmlCTI

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.
2.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Espressif esptool 4.6.2. It has been rated as problematic. This affects an unknown part. The manipulation leads to inadequate encryption. This vulnerability is referenced as CVE-2023-46894. No exploit is available.

Detailsinfo

A vulnerability was found in Espressif esptool 4.6.2 and classified as problematic. This issue affects an unknown function. The manipulation with an unknown input leads to a inadequate encryption vulnerability. Using CWE to declare the problem leads to CWE-326. The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required. Impacted is confidentiality. The summary by CVE is:

An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.

The weakness was published 11/09/2023 as 926. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-46894 since 10/30/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 247812 (Linux Distros Unpatched Vulnerability : CVE-2023-46894), 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 vulnerability database at Tenable (247812). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Espressif

Name

esptool

Version

4.6.2

Website

Product: https://github.com/espressif/esptool/

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

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Inadequate encryption
CWE: CWE-326 / CWE-310
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: 247812
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-46894

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/30/2023 🔍
11/09/2023 +10 days 🔍
11/09/2023 +0 days 🔍
08/11/2025 +641 days 🔍

Sourcesinfo

Product: github.com

Advisory: 926
Status: Confirmed

CVE: CVE-2023-46894 (🔍)
GCVE (CVE): GCVE-0-2023-46894
GCVE (VulDB): GCVE-100-244895

Entryinfo

Created: 11/09/2023 17:56
Updated: 08/11/2025 05:40
Changes: 11/09/2023 17:56 (38), 08/11/2025 05:40 (17)
Complete: 🔍
Cache ID: 216::103