7.5

CVE-2022-47517: drachtio drachtio-server Off-by-one Error

Modified
Published 18-12-2022Last modified 17-04-2025

Vulnerability summary

CVE-2022-47517 is a high (CVSS 7.5) Off-by-one Error vulnerability in drachtio drachtio-server. EPSS estimates a 1.56% chance of exploitation in the next 30 days, higher than 75.4% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (GitHub, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
1.56%
0%100%
Low · +0.06 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Timeline

  1. 18-12-2022
    PublishedVulnerability first disclosed.
  2. 17-04-2025
    Last modifiedVulnerability information updated.

Description

An issue was discovered in the libsofia-sip fork in drachtio-server before 0.8.19. It allows remote attackers to cause a denial of service (daemon crash) via a crafted UDP message that causes a url_canonize2 heap-based buffer over-read because of an off-by-one error.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

1.56%

Chance of exploitation in the next 30 days

Percentile

75%

Versus all other CVEs

30-day change

Increase +0.06 pp

From 1.51% on 11-10-2026

11-10-202610-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Drachtio Server

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Drachtio1 product

1 vendor · 1 product

References

3 links