How severe is CVE-2014-4045?

CVE-2014-4045 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2014-4045 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-4045?

CVE-2014-4045 primarily affects Digium Asterisk. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-4045?

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

When was CVE-2014-4045 published?

CVE-2014-4045 was published on 2014-06-17 and last updated on 2026-06-17.

CVE-2014-4045

CVE-2014-4045 is a medium-severity vulnerability in Digium Asterisk with a CVSS 2.0 base score of 4.3. 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-189.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: Digium Asterisk
Published: 2014-06-17
Last modified: 2026-06-17

Description

The Publish/Subscribe Framework in the PJSIP channel driver in Asterisk Open Source 12.x before 12.3.1, when sub_min_expiry is set to zero, allows remote attackers to cause a denial of service (assertion failure and crash) via an unsubscribe request when not subscribed to the device.

Frequently asked questions

What is CVE-2014-4045?: The Publish/Subscribe Framework in the PJSIP channel driver in Asterisk Open Source 12.x before 12.3.1, when sub_min_expiry is set to zero, allows remote attackers to cause a denial of service (assertion failure and crash) via an unsubscribe request when not subscribed to the device.
How severe is CVE-2014-4045?: CVE-2014-4045 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2014-4045 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-4045?: CVE-2014-4045 primarily affects Digium Asterisk. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-4045?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-4045 published?: CVE-2014-4045 was published on 2014-06-17 and last updated on 2026-06-17.

References

Affected products (13)

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:12.1.1:*:*:*:*:*:*:*
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:*:*:*:*:*:*

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