CVE-2025-63261: AWStats 8.0 is vulnerable to Command Injection via the open function

This month

HIGH 7.8WATCHLISTDOWNGRADEMITIGATE

CVE-2025-63261 is a high-severity flaw (CVSS 7.8) affecting awstats, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

AWStats 8.0 is vulnerable to Command Injection via the open function

Why this priority

High severity
Public exploit reference
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-03-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: awstats · debian

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-20 21:17 UTCPublished CVE record published
2026-06-17 09:53 UTCUpdated Record last modified

awstats awstats DOWNGRADE

Affected: 7.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.9

1. Check installed version

apt-cache policy awstats || rpm -q awstats || awstats --version

2. No fixed release: DOWNGRADE to a release before 7.9 (Debian / Ubuntu)

apt-cache madison awstats sudo apt install awstats=<VERSION_BEFORE_7.9> sudo apt-mark hold awstats

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list awstats sudo dnf downgrade awstats-<VERSION_BEFORE_7.9> sudo dnf versionlock add awstats

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

debian debian linux MITIGATE

Affected: 11.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-63261?

awstats: downgrade or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-63261 being exploited?

CVE-2025-63261 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-63261 affect?

CVE-2025-63261 affects awstats, debian linux. Severity is high (CVSS 7.8). AWStats 8.0 is vulnerable to Command Injection via the open function

How urgent is CVE-2025-63261?

Priority 54/100. High severity; Public exploit reference; On your watchlist

Software pages

Debian vulnerabilities

References

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