Vulnerability · Published May 26, 2026 · Assigned by mitre
CVE-2026-48696
Medium 6.2
In plain English
A medium-severity buffer overflow in the fastnetmon package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.2Medium
Exploit odds (30 days)0.1%top 97.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
FastNetMon Community Edition through 1.2.9 has a buffer overflow, a different vulnerability than CVE-2026-48686 and CVE-2026-48689.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | fastnetmon | no fix listed | DEBIAN-CVE-2026-48696 |
| Debian:13 | fastnetmon | 1.2.9-0+deb13u1 | DEBIAN-CVE-2026-48696 |
| Debian:14 | fastnetmon | 1.2.9-1 | DEBIAN-CVE-2026-48696 |
| Ubuntu:25.10 | fastnetmon | no fix listed | UBUNTU-CVE-2026-48696 |
| Ubuntu:26.10 | fastnetmon | no fix listed | UBUNTU-CVE-2026-48696 |
Affected products (as reported)
Weakness: CWE-120, CWE-676 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H