CVE-2025-54995: Asterisk remotely exploitable leak of RTP UDP ports and internal resources

Published Aug 28, 2025
·
Updated

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 18.26.4 and 18.9-cert17, RTP UDP ports and internal resources can leak due to a lack of session termination. This could result in leaks and resource exhaustion. This issue has been patched in versions 18.26.4 and 18.9-cert17.

Affected Software

22 affected components
Asterisk Asterisk<18.26.4, <18.9-cert17
Sangoma Asterisk<18.26.4
Sangoma Certified Asterisk<18.9
Sangoma Certified Asterisk=18.9-cert1
Sangoma Certified Asterisk=18.9-cert1-rc1
Sangoma Certified Asterisk=18.9-cert10
Sangoma Certified Asterisk=18.9-cert11
Sangoma Certified Asterisk=18.9-cert12
Sangoma Certified Asterisk=18.9-cert13
Sangoma Certified Asterisk=18.9-cert14
Sangoma Certified Asterisk=18.9-cert15
Sangoma Certified Asterisk=18.9-cert16
Sangoma Certified Asterisk=18.9-cert2
Sangoma Certified Asterisk=18.9-cert3
Sangoma Certified Asterisk=18.9-cert4
Sangoma Certified Asterisk=18.9-cert5
Sangoma Certified Asterisk=18.9-cert6
Sangoma Certified Asterisk=18.9-cert7
Sangoma Certified Asterisk=18.9-cert8
Sangoma Certified Asterisk=18.9-cert8-rc1
Sangoma Certified Asterisk=18.9-cert8-rc2
Sangoma Certified Asterisk=18.9-cert9

Remediation

Patch Available

https://github.com/asterisk/asterisk/commit/0278f5bde14565c6838a6ec39bc21aee0cde56a9

Patch Available

https://github.com/asterisk/asterisk/commit/eafcd7a451dcd007dddf324ac37dd55a4808338d

Event History

Aug 28, 2025
CVE Published
via MITRE·03:08 PM
Data Sourced
via MITRE·03:08 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·03:16 PM
RemedyDescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2025-54995?

CVE-2025-54995 is considered a medium severity vulnerability due to potential resource exhaustion and disclosure risks.

2

How do I fix CVE-2025-54995?

To fix CVE-2025-54995, upgrade Asterisk to version 18.26.4 or 18.9-cert17 or higher.

3

What are the potential impacts of CVE-2025-54995?

The potential impacts of CVE-2025-54995 include leaks of RTP UDP ports and internal resource exhaustion.

4

Which versions of Asterisk are affected by CVE-2025-54995?

Asterisk versions prior to 18.26.4 and 18.9-cert17 are affected by CVE-2025-54995.

5

Is there a patch available for CVE-2025-54995?

Yes, CVE-2025-54995 has a patch available in the updated versions of Asterisk since 18.26.4 and 18.9-cert17.

Company

Resources

Contact

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