How severe is CVE-2017-9372?

CVE-2017-9372 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-9372 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9372?

CVE-2017-9372 primarily affects Digium Open Source. In total, 50 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-9372?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-9372 published?

CVE-2017-9372 was published on 2017-06-02 and last updated on 2026-06-17.

CVE-2017-9372

CVE-2017-9372 is a high-severity vulnerability in Digium Open Source with a CVSS 3.x base score of 7.5. 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-119.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Digium Open Source
Published: 2017-06-02
Last modified: 2026-06-17

Description

PJSIP, as used in Asterisk Open Source 13.x before 13.15.1 and 14.x before 14.4.1, Certified Asterisk 13.13 before 13.13-cert4, and other products, allows remote attackers to cause a denial of service (buffer overflow and application crash) via a SIP packet with a crafted CSeq header in conjunction with a Via header that lacks a branch parameter.

Frequently asked questions

What is CVE-2017-9372?: PJSIP, as used in Asterisk Open Source 13.x before 13.15.1 and 14.x before 14.4.1, Certified Asterisk 13.13 before 13.13-cert4, and other products, allows remote attackers to cause a denial of service (buffer overflow and application crash) via a SIP packet with a crafted CSeq header in conjunction with a Via header that lacks a branch parameter.
How severe is CVE-2017-9372?: CVE-2017-9372 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-9372 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9372?: CVE-2017-9372 primarily affects Digium Open Source. In total, 50 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-9372?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-9372 published?: CVE-2017-9372 was published on 2017-06-02 and last updated on 2026-06-17.

References

Affected products (50)

cpe:2.3:a:digium:open_source:13.0.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.1.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.1.0:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.2.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.2.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.3.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.4.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.4.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.5.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.5.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.6.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.7.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.7.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.8.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.8.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.8.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.8.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.9.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.9.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.10.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.11.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.12.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.12.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.12.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.12.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.13.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.14.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:13.15.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:14.0.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:14.0.0:beta1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:14.0.0:beta2:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:14.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:14.1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:14.2.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:14.2.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:14.2.0:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:14.2.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:14.3.0:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:open_source:14.4.0:rc1:*:*:*:*:*:*

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