Intel 82599 Ethernet Controller 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 (≈)
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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.
4.3$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Intel 82599 Ethernet Controller. This impacts an unknown function. The manipulation leads to denial of service. This vulnerability is uniquely identified as CVE-2021-33096. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Intel 82599 Ethernet Controller (the affected version is unknown). It has been rated as problematic. This issue affects an unknown code. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was disclosed 02/10/2022 as intel-sa-00571. It is possible to read the advisory at intel.com. The identification of this vulnerability is CVE-2021-33096 since 05/18/2021. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/08/2025). The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 245557 (Linux Distros Unpatched Vulnerability : CVE-2021-33096), 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 (245557). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

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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Nessus ID: 245557
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2021-33096

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/18/2021 🔍
02/10/2022 +268 days 🔍
02/10/2022 +0 days 🔍
08/08/2025 +1275 days 🔍

Sourcesinfo

Vendor: intel.com

Advisory: intel-sa-00571
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-33096 (🔍)
GCVE (CVE): GCVE-0-2021-33096
GCVE (VulDB): GCVE-100-192707

Entryinfo

Created: 02/10/2022 11:27
Updated: 08/08/2025 17:08
Changes: 02/10/2022 11:27 (37), 02/13/2022 14:13 (1), 08/08/2025 17:08 (16)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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