BugZero | Cisco BugID CSCvv18875 - 3850: MKA MACSEC don't support GCM-AES-256 after u...

Cisco - Defect ID: CSCvv18875

3850: MKA MACSEC don't support GCM-AES-256 after upgrading to 16.12.3a

Cisco - Defect ID: CSCvv18875

3850: MKA MACSEC don't support GCM-AES-256 after upgrading to 16.12.3a

Last updated on June 24th, 2025

BugZero Risk Score
6.1 Medium

Overall: 6.1

Severity: 6.4

Lifecycle: 9.1

Popularity: 4.6

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Bug Details

Description

Symptom

After upgrading switch to 16.12.3a, switch not accepting GCM-AES-256 or GCM-AES-XPN-256 However, it's working with GCM-AES-128

Conditions

Workaround

use GCM-AES-128

Further Problem Description

Change history

2025-03-27 Added: 16.12.3

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OPERATIONAL DEFECT DATABASE

Cisco - Defect ID: CSCvv18875

3850: MKA MACSEC don't support GCM-AES-256 after upgrading to 16.12.3a

Cisco - Defect ID: CSCvv18875

3850: MKA MACSEC don't support GCM-AES-256 after upgrading to 16.12.3a

Last updated on June 24th, 2025

BugZero Risk Score
6.1 Medium

Bug Details

Symptom

Conditions

Workaround

Further Problem Description

Links

Top Cisco Defects by Risk Score

Ready to prevent the next vendor outage?

OPERATIONAL DEFECT DATABASE

Cisco - Defect ID: CSCvv18875

3850: MKA MACSEC don't support GCM-AES-256 after upgrading to 16.12.3a

Cisco - Defect ID: CSCvv18875

3850: MKA MACSEC don't support GCM-AES-256 after upgrading to 16.12.3a

Last updated on June 24th, 2025

BugZero Risk Score6.1 Medium

Bug Details

Symptom

Conditions

Workaround

Further Problem Description

Links

Top Cisco Defects by Risk Score

Ready to prevent the next vendor outage?

BugZero Risk Score
6.1 Medium