Vulnerability · Published Mar 13, 2026 · Assigned by mitre
CVE-2026-32746
Critical 9.8
In plain English
A critical-severity buffer overflow in inetutils from GNU. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 44.8% (higher than 99% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)44.8%top 1.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling1Public PoC
Official description
telnetd in GNU inetutils through 2.7 allows an out-of-bounds write in the LINEMODE SLC (Set Local Characters) suboption handler because add_slc does not check whether the buffer is full.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | inetutils-telnet | 2.8-r0 | ALPINE-CVE-2026-32746 |
| Debian:12 | inetutils | 2:2.4-2+deb12u3 | DEBIAN-CVE-2026-32746 |
| Debian:13 | inetutils | 2:2.6-3+deb13u3 | DEBIAN-CVE-2026-32746 |
| Debian:14 | inetutils | 2:2.7-4 | DEBIAN-CVE-2026-32746 |
| Ubuntu:24.04:LTS | inetutils | 2:2.5-3ubuntu4.2 | USN-8387-1 |
| Ubuntu:24.04:LTS | inetutils | 2:2.5-3ubuntu4.2 | UBUNTU-CVE-2026-32746 |
| Ubuntu:25.10 | inetutils | 2:2.6-1ubuntu3.2 | USN-8387-1 |
| Ubuntu:25.10 | inetutils | 2:2.6-1ubuntu3.2 | UBUNTU-CVE-2026-32746 |
| Ubuntu:26.04:LTS | inetutils | 2:2.7-2ubuntu1.1 | UBUNTU-CVE-2026-32746 |
| Ubuntu:26.04:LTS | inetutils | 2:2.7-2ubuntu1.1 | USN-8387-1 |
Affected products (as reported)
Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H