What is CVE-2022-47516?

CVE-2022-47516 is a high-severity vulnerability in Drachtio Drachtio-Server, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2022-12-18.

How severe is CVE-2022-47516?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Drachtio Drachtio-Server

CVE-2022-47516

An issue was discovered in the libsofia-sip fork in drachtio-server before 0.8.20. It allows remote attackers to cause a denial of service (daemon crash) via a crafted UDP message that leads to a failure of the libsofia-sip-ua/tport/tport.c self assertion.

Published 2022-12-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.017 (76.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.017 · change: +0.000

Affected products

Drachtio Drachtio-Server

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

github.com/drachtio/drachtio-server/issues/244 (Exploit, Third Party Advisory)
github.com/davehorton/sofia-sip/commit/13b2a135287caa2d67ac6cd5155626821e25b377 (Patch, Third Party Advisory)
lists.debian.org/debian-lts-announce/2023/02/msg00028.html (mailing-list)
www.debian.org/security/2023/dsa-5410 (vendor-advisory)

Frequently asked questions

What is CVE-2022-47516?: CVE-2022-47516 is a high-severity vulnerability in Drachtio Drachtio-Server, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2022-12-18.
How severe is CVE-2022-47516?: High severity. CVSS v3 base score is 7.5 out of 10.