What is CVE-2025-63749?

CVE-2025-63749 is a medium-severity vulnerability in Pnetlab, classified under Command Injection. CVSS score: 6.5/10. Published 2025-11-18.

How severe is CVE-2025-63749?

Medium severity. CVSS v3 base score is 6.5 out of 10.

RCE in Pnetlab

CVE-2025-63749

pnetlab 5.3.11 is vulnerable to Command Injection via the qemu_options parameter.

Vulnerability class: Command Injection (OS Command Injection)

Published 2025-11-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.010 (60.8th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Pnetlab — versions 5.3.11

Weakness classification (CWE)

CWE-77 — Command Injection

References

github.com/XunMInt/cve/blob/main/Pnetlab-20251013.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-63749?: CVE-2025-63749 is a medium-severity vulnerability in Pnetlab, classified under Command Injection. CVSS score: 6.5/10. Published 2025-11-18.
How severe is CVE-2025-63749?: Medium severity. CVSS v3 base score is 6.5 out of 10.