What is CVE-2025-63261?

CVE-2025-63261 is a high-severity vulnerability in Awstats, classified under OS Command Injection. CVSS score: 7.8/10. Published 2026-03-20.

How severe is CVE-2025-63261?

High severity. CVSS v3 base score is 7.8 out of 10.

RCE in Awstats

CVE-2025-63261

AWStats 8.0 is vulnerable to Command Injection via the open function

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-03-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (62.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.8% 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

Awstats — versions 7.9
Debian Linux — versions 11.0

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

github.com/eldy/AWStats/blob/develop/wwwroot/cgi-bin/awstats.pl (Product)
pentest-tools.com/PTT-2025-021-Code-Execution-in-AWStats.pdf (Exploit, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2025-63261?: CVE-2025-63261 is a high-severity vulnerability in Awstats, classified under OS Command Injection. CVSS score: 7.8/10. Published 2026-03-20.
How severe is CVE-2025-63261?: High severity. CVSS v3 base score is 7.8 out of 10.