VDB-187437 · CVE-2021-20611 · icsa-21-334-02

Mitsubishi Electric MELSEC iQ-R/MELSEC Q/MELSEC L denial of service

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.
6.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Mitsubishi Electric MELSEC iQ-R, MELSEC Q and MELSEC L. It has been classified as problematic. This affects an unknown function. Performing a manipulation results in denial of service. This vulnerability is reported as CVE-2021-20611. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Mitsubishi Electric MELSEC iQ-R, MELSEC Q and MELSEC L (unknown version). This affects an unknown code block. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The weakness was disclosed 12/01/2021 as icsa-21-334-02. The advisory is shared at us-cert.cisa.gov. This vulnerability is uniquely identified as CVE-2021-20611 since 12/17/2020. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

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

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Productinfo

Vendor

Mitsubishi Electric

Name

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/17/2020 🔍
12/01/2021 +349 days 🔍
12/01/2021 +0 days 🔍
12/08/2021 +7 days 🔍

Sourcesinfo

Advisory: icsa-21-334-02
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-20611 (🔍)
GCVE (CVE): GCVE-0-2021-20611
GCVE (VulDB): GCVE-100-187437

Entryinfo

Created: 12/01/2021 19:52
Updated: 12/08/2021 10:11
Changes: 12/01/2021 19:52 (37), 12/08/2021 10:05 (1), 12/08/2021 10:11 (18)
Complete: 🔍
Cache ID: 216::103