CVE-2007-4521

Name: CVE-2007-4521
Creator: NVD / NIST
Published: 2007-08-28T01:17:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.00%

Last modified Jun 16, 2026

CVE-2007-4521 is a vulnerability of currently unknown severity. Asterisk Open Source 1.4.5 through 1.4.11, when configured to use an IMAP voicemail storage backend, allows remote attackers to cause a denial of service via an e-mail with an "invalid/corrupted" MIME body, which triggers a crash when the recipient listens to voicemail.. EPSS estimates a 3.00% chance of exploitation in the next 30 days.

Description

Asterisk Open Source 1.4.5 through 1.4.11, when configured to use an IMAP voicemail storage backend, allows remote attackers to cause a denial of service via an e-mail with an "invalid/corrupted" MIME body, which triggers a crash when the recipient listens to voicemail.

Metrics

EPSS Probability

3.00%

85.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Asterisk	Asterisk	1.4.5
Asterisk	Asterisk	1.4.6
Asterisk	Asterisk	1.4.7
Asterisk	Asterisk	1.4.8
Asterisk	Asterisk	1.4.9
Asterisk	Asterisk	1.4.10
Asterisk	Asterisk	1.4.11

References

Timeline

Published: Aug 28, 2007
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2007-4521?

How severe is CVE-2007-4521?

Severity scoring for CVE-2007-4521 is pending analysis. The EPSS model estimates a 3.00% probability of exploitation in the next 30 days.

How do I fix CVE-2007-4521?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2007-4521?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST