A stack-based buffer overflow in handle_request function in DHT.c in toxcore 0.1.9…
Priority MEDIUM 49CWE-682Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.04135 90th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:toktok:toxcore:*:*:*:*:*:*:*:* | 0.1.9 – 0.1.11; 0.2.0 – 0.2.12 | Vulnerable | Toktok |
| cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | 34 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* | 35 | Vulnerable | Fedoraproject |
- cpe:2.3:a:toktok:toxcore:*:*:*:*:*:*:*:* Versions 0.1.9 – 0.1.11; 0.2.0 – 0.2.12 Vulnerable ·Toktok
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2021-44847
- 2026-10-03 Alias added: GHSA-62pr-4hg6-fwph
- 2026-10-06 EPSS moved to the 90th–95th percentile
References
Sources
- CVE-2021-44847 · CVE Program
- CVE-2021-44847 · NVD
- FIRST EPSS
- GHSA-62pr-4hg6-fwph · GitHub Advisory Database · CC BY 4.0
- CVE-2021-44847 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences