Arista EOS up to 4.28.10.1M/4.29.7M/4.30.5M/4.31.1F 802.1X Mode improper validation of specified type of input

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Arista EOS up to 4.28.10.1M/4.29.7M/4.30.5M/4.31.1F. It has been classified as critical. This vulnerability affects unknown code of the component 802.1X Mode. Performing a manipulation results in improper validation of specified type of input. This vulnerability is known as CVE-2024-6858. Access to the local network is required for this attack. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in Arista EOS up to 4.28.10.1M/4.29.7M/4.30.5M/4.31.1F. This affects an unknown code block of the component 802.1X Mode. The manipulation with an unknown input leads to a improper validation of specified type of input vulnerability. CWE is classifying the issue as CWE-1287. The product receives input that is expected to be of a certain type, but it does not validate or incorrectly validates that the input is actually of the expected type. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In Arista’s EOS when in 802.1X mode, multi-auth unauthenticated hosts might be allowed access to a switch port if there exists an EAPOL capable device in the fallback VLAN.

It is possible to read the advisory at arista.com. This vulnerability is uniquely identified as CVE-2024-6858 since 07/17/2024. The exploitability is told to be easy. Access to the local network is required for this attack. No form of authentication is needed for exploitation. 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 06/05/2026).

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

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
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: Improper validation of specified type of input
CWE: CWE-1287 / CWE-20
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/17/2024 CVE reserved
06/04/2026 +687 days VulDB entry created
06/05/2026 +0 days Advisory disclosed
06/05/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: arista.com
Status: Confirmed

CVE: CVE-2024-6858 (🔒)
GCVE (CVE): GCVE-0-2024-6858
GCVE (VulDB): GCVE-100-368415

Entryinfo

Created: 06/05/2026 00:51
Changes: 06/05/2026 00:51 (52)
Complete: 🔍
Cache ID: 216::103

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