How severe is CVE-2019-12147?

CVE-2019-12147 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-12147 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12147?

CVE-2019-12147 affects Sangoma Session Border Controller Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12147?

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

When was CVE-2019-12147 published?

CVE-2019-12147 was published on 2019-10-22 and last updated on 2026-06-17.

CVE-2019-12147

CVE-2019-12147 is a critical-severity vulnerability in Sangoma Session Border Controller Firmware with a CVSS 3.x base score of 9.8. 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-88.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-88
Affected product: Sangoma Session Border Controller Firmware
Published: 2019-10-22
Last modified: 2026-06-17

Description

The Sangoma Session Border Controller (SBC) 2.3.23-119 GA web interface is vulnerable to Argument Injection via special characters in the username field. Upon successful exploitation, a remote unauthenticated user can create a local system user with sudo privileges, and use that user to login to the system (either via the web interface or via SSH) to achieve complete compromise of the device. This affects /var/webconfig/gui/Webconfig.inc.php and /usr/local/sng/bin/sng-user-mgmt.

Frequently asked questions

What is CVE-2019-12147?: The Sangoma Session Border Controller (SBC) 2.3.23-119 GA web interface is vulnerable to Argument Injection via special characters in the username field. Upon successful exploitation, a remote unauthenticated user can create a local system user with sudo privileges, and use that user to login to the system (either via the web interface or via SSH) to achieve complete compromise of the device. This affects /var/webconfig/gui/Webconfig.inc.php and /usr/local/sng/bin/sng-user-mgmt.
How severe is CVE-2019-12147?: CVE-2019-12147 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-12147 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12147?: CVE-2019-12147 affects Sangoma Session Border Controller Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12147?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-12147 published?: CVE-2019-12147 was published on 2019-10-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:sangoma:session_border_controller_firmware:2.3.23-119-ga:*:*:*:*:*:*:*

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