How severe is CVE-2014-6609?

CVE-2014-6609 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2014-6609 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-6609?

CVE-2014-6609 primarily affects Digium Asterisk. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-6609?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-6609 published?

CVE-2014-6609 was published on 2014-11-26 and last updated on 2026-06-17.

CVE-2014-6609

CVE-2014-6609 is a medium-severity vulnerability in Digium Asterisk with a CVSS 2.0 base score of 4.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 4.0)
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Digium Asterisk
Published: 2014-11-26
Last modified: 2026-06-17

Description

The res_pjsip_pubsub module in Asterisk Open Source 12.x before 12.5.1 allows remote authenticated users to cause a denial of service (crash) via crafted headers in a SIP SUBSCRIBE request for an event package.

Frequently asked questions

What is CVE-2014-6609?: The res_pjsip_pubsub module in Asterisk Open Source 12.x before 12.5.1 allows remote authenticated users to cause a denial of service (crash) via crafted headers in a SIP SUBSCRIBE request for an event package.
How severe is CVE-2014-6609?: CVE-2014-6609 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2014-6609 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-6609?: CVE-2014-6609 primarily affects Digium Asterisk. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-6609?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-6609 published?: CVE-2014-6609 was published on 2014-11-26 and last updated on 2026-06-17.

References

http://downloads.asterisk.org/pub/security/AST-2014-009.html

Affected products (16)

cpe:2.3:a:digium:asterisk:12.0.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.1.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.1.0:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.1.0:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.2.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.2.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.2.0:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.2.0:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.3.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.3.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.3.0:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.4.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.4.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.5.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:12.5.0:rc1:*:*:*:*:*:*

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