BugZero | Cisco BugID CSCws66592 - SGW crashes when making calls once the phone was o...

Cisco - Defect ID: CSCws66592

SGW crashes when making calls once the phone was on survivability mode due to outage.

Cisco - Defect ID: CSCws66592

SGW crashes when making calls once the phone was on survivability mode due to outage.

Last updated on February 24th, 2026

BugZero Risk Score
5.8 Medium

Overall: 5.8

Severity: 6.4

Lifecycle: 5.2

Popularity: 4.6

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Bug Details

Description

Symptom

Multiple crashes observed on SGW when the MPP phones due to double free of memory corruption

Conditions

MPP phone registered to SGW on survivability mode and tried to make call while using 17.12.4

Workaround

No workaround

Further Problem Description

Change history

2026-01-12 Added: 17.12.4

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Cisco - Defect ID: CSCws66592

SGW crashes when making calls once the phone was on survivability mode due to outage.

Cisco - Defect ID: CSCws66592

SGW crashes when making calls once the phone was on survivability mode due to outage.

Last updated on February 24th, 2026

BugZero Risk Score5.8 Medium

Bug Details

Symptom

Conditions

Workaround

Further Problem Description

Links

Top Cisco Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
5.8 Medium