CVE catalog
CVE-2018-25021
libtoxcore: CVE-2018-25021
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.34% · Oct 25, 2026
The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libtoxcore | sid | 0.2.22-1 | fixed |
| Debian | libtoxcore | forky | 0.2.22-1 | fixed |
| Debian | libtoxcore | trixie | 0.2.20-1 | fixed |
| Debian | libtoxcore | bookworm | 0.2.18-1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libtoxcore | source | sid | 0.2.8-1 | not yet assigned | Not reported | Not reported |
| Debian | libtoxcore | source | forky | 0.2.8-1 | not yet assigned | Not reported | Not reported |
| Debian | libtoxcore | source | trixie | 0.2.8-1 | not yet assigned | Not reported | Not reported |
| Debian | libtoxcore | source | bookworm | 0.2.8-1 | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libtoxcore2]Fixed
Source package: [libtoxcore]
Details (2)
0.2.18-1· amd64 · bookwormFixed · Fixed:
0.2.8-1dsa · libtoxcore · debian · bookworm; dsa · libtoxcore · debian · 12
0.2.18-1· arm64 · bookwormFixed · Fixed:
0.2.8-1dsa · libtoxcore · debian · bookworm; dsa · libtoxcore · debian · 12
- [libtoxcore-dev]Fixed
Source package: [libtoxcore]
Details (2)
0.2.18-1· amd64 · bookwormFixed · Fixed:
0.2.8-1dsa · libtoxcore · debian · bookworm; dsa · libtoxcore · debian · 12
0.2.18-1· arm64 · bookwormFixed · Fixed:
0.2.8-1dsa · libtoxcore · debian · bookworm; dsa · libtoxcore · debian · 12
- [toxcore-utils]Fixed
Source package: [libtoxcore]
Details (2)
0.2.18-1· amd64 · bookwormFixed · Fixed:
0.2.8-1dsa · libtoxcore · debian · bookworm; dsa · libtoxcore · debian · 12
0.2.18-1· arm64 · bookwormFixed · Fixed:
0.2.8-1dsa · libtoxcore · debian · bookworm; dsa · libtoxcore · debian · 12
[Debian 13 (Trixie)]
- [libtoxcore2]Fixed
Source package: [libtoxcore]
Details (2)
0.2.20-1· amd64 · trixieFixed · Fixed:
0.2.8-1dsa · libtoxcore · debian · 13
0.2.20-1· arm64 · trixieFixed · Fixed:
0.2.8-1dsa · libtoxcore · debian · 13
- [libtoxcore-dev]Fixed
Source package: [libtoxcore]
Details (2)
0.2.20-1· amd64 · trixieFixed · Fixed:
0.2.8-1dsa · libtoxcore · debian · 13
0.2.20-1· arm64 · trixieFixed · Fixed:
0.2.8-1dsa · libtoxcore · debian · 13
- [toxcore-utils]Fixed
Source package: [libtoxcore]
Details (2)
0.2.20-1· amd64 · trixieFixed · Fixed:
0.2.8-1dsa · libtoxcore · debian · 13
0.2.20-1· arm64 · trixieFixed · Fixed:
0.2.8-1dsa · libtoxcore · debian · 13
Observed: