How severe is CVE-2020-15623?

CVE-2020-15623 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-15623 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15623?

CVE-2020-15623 affects Control-webpanel Webpanel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-15623?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-15623 published?

CVE-2020-15623 was published on 2020-07-28 and last updated on 2026-06-17.

CVE-2020-15623

CVE-2020-15623 is a critical-severity vulnerability in Control-webpanel Webpanel with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-749.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-749
Affected product: Control-webpanel Webpanel
Published: 2020-07-28
Last modified: 2026-06-17

Description

This vulnerability allows remote attackers to write arbitrary files 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_mod_security.php. When parsing the archivo parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-9722.

Frequently asked questions

What is CVE-2020-15623?: This vulnerability allows remote attackers to write arbitrary files 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_mod_security.php. When parsing the archivo parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-9722.
How severe is CVE-2020-15623?: CVE-2020-15623 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-15623 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15623?: CVE-2020-15623 affects Control-webpanel Webpanel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-15623?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-15623 published?: CVE-2020-15623 was published on 2020-07-28 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-20-770/

Affected products (1)

cpe:2.3:a:control-webpanel:webpanel:0.9.8.923:*:*:*:*:*:*:*

More vulnerabilities in Control-webpanel Webpanel

CVE-2023-42121 — Critical (CVSS 9.8): Control Web Panel Missing Authentication Remote Code Execution Vulnerability. This vulnerability allows remote…
CVE-2022-44877 — Critical (CVSS 9.8): login/index.php in CWP (aka Control Web Panel or CentOS Web Panel) 7 before 0.9.8.1147 allows remote attackers to…
CVE-2021-45467 — Critical (CVSS 9.8): In CWP (aka Control Web Panel or CentOS Web Panel) before 0.9.8.1107, an unauthenticated attacker can use %00 bytes to…
CVE-2021-45466 — Critical (CVSS 9.8): In CWP (aka Control Web Panel or CentOS Web Panel) before 0.9.8.1107, attackers can make a crafted request to…
CVE-2022-25046 — Critical (CVSS 9.8): A path traversal vulnerability in loader.php of CWP v0.9.8.1122 allows attackers to execute arbitrary code via a…
CVE-2021-31324 — Critical (CVSS 9.8): The unprivileged user portal part of CentOS Web Panel is affected by a Command Injection vulnerability leading to root…

All CVEs affecting Control-webpanel Webpanel →

Other CWE-749 vulnerabilities

CVE-2023-40151 — Critical (CVSS 10.0): When user authentication is not enabled the shell can execute commands with the highest privileges. Red Lion SixTRAK…
CVE-2026-55454 — Critical (CVSS 9.9): Appsmith is a platform to build admin panels, internal tools, and dashboards. Prior to 2.1, the bundled Caddy…
CVE-2026-30957 — Critical (CVSS 9.9): OneUptime is a solution for monitoring and managing online services. Prior to 10.0.21, OneUptime Synthetic Monitors…
CVE-2026-30921 — Critical (CVSS 9.9): OneUptime is a solution for monitoring and managing online services. Prior to 10.0.20, OneUptime Synthetic Monitors…
CVE-2019-18342 — Critical (CVSS 9.9): A vulnerability has been identified in Control Center Server (CCS) (All versions < V1.5.0). The SFTP service (default…
CVE-2025-59403 — Critical (CVSS 9.8): The Flock Safety Android Collins application (aka com.flocksafety.android.collins) 6.35.31 for Android lacks…

Browse all CWE-749 vulnerabilities →