CVE-2020-15609: This vulnerability allows remote attackers to execute arbitrary code on affected installations of CentOS Web P

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2020-15609 is a critical-severity flaw (CVSS 9.8) affecting centos web panel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of CentOS Web Panel cwp-e17.0.9.8.923. Authentication is not required to exploit this vulnerability. The specific flaw exists within ajax_dashboard.php. When parsing the service_stop parameter, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute co

Why this priority

Critical severity
EPSS top 5%: very likely to be exploited
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	8.1% (top 5%)
CISA exploited list	No
Weakness	CWE-78
Published	2020-07-28
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: centos-webpanel

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

Am I affected?

Timeline

2020-07-28 17:15 UTCPublished CVE record published
2026-06-17 02:56 UTCUpdated Record last modified

centos-webpanel centos web panel DOWNGRADE

Affected: 17.0.9.8.923

Fixed in: no fixed release known

Safe to downgrade to: a release before 17.0.9.8.923

1. Check installed version

apt-cache policy centos-web-panel || rpm -q centos-web-panel || centos-web-panel --version

2. No fixed release: DOWNGRADE to a release before 17.0.9.8.923 (Debian / Ubuntu)

apt-cache madison centos-web-panel sudo apt install centos-web-panel=<VERSION_BEFORE_17.0.9.8.923> sudo apt-mark hold centos-web-panel

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

dnf --showduplicates list centos-web-panel sudo dnf downgrade centos-web-panel-<VERSION_BEFORE_17.0.9.8.923> sudo dnf versionlock add centos-web-panel

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.

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-2020-15609?

centos web panel: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-15609 being exploited?

CVE-2020-15609 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-2020-15609 affect?

CVE-2020-15609 affects centos web panel. Severity is critical (CVSS 9.8). This vulnerability allows remote attackers to execute arbitrary code on affected installations of CentOS Web Panel cwp-e17.0.9.8.923. Authentication is not required to exploit this vulnerability. The specific flaw exists within ajax_dashboa

How urgent is CVE-2020-15609?

Priority 63/100. Critical severity; EPSS top 5%: very likely to be exploited; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

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References

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