THREATPORT/VULNERABILITY/CVE-2021-44847
CRITICAL SEVERITY

CVE-2021-44847

Toxcore vulnerability

CVSS
9.8
EPSS
4.0%
EPSS pct
89th
Exploited
No known
A stack-based buffer overflow in handle_request function in DHT.c in toxcore 0.1.9 through 0.1.11 and 0.2.0 through 0.2.12 (caused by an improper length calculation during the handling of received network packets) allows remote attackers to crash the process or potentially execute arbitrary code via a network packet.
Affected vendor
Toktok
Affected product
Toxcore
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2021-12-13

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 4.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2021-44847

  • Confirm whether Toktok Toxcore is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-44847.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-44847

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-44847 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2021-44847?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2021-44847.

Start free scan

No credit card. Agentless.

Related vulnerabilities

CRITICAL
CVE-2018-6228
Email Encryption Gateway vulnerability
CRITICAL
CVE-2018-6229
Email Encryption Gateway vulnerability
CRITICAL
CVE-2018-6231
Smart Protection Server vulnerability