CVE-2021-26804

mediumpriority · track · 26OT risk · elevatedEPSS 0.012 · 68 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.19% (68th) EPSS

CVSS 4 · medium

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

Insecure Permissions in Centreon Web versions 19.10.18, 20.04.8, and 20.10.2 allows remote attackers to bypass validation by changing any file extension to ".gif", then uploading it in the "Administration/ Parameters/ Images" section of the application.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:L/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-276USprimary

affected products (4)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
centreon centreon web= 19.10.18nvdUScpe:2.3:a:centreon:centreon_web:*:*:*:*:*:*:*:*
centreon centreon web= 20.04.8nvdUScpe:2.3:a:centreon:centreon_web:*:*:*:*:*:*:*:*
centreon centreon web= 20.10.2nvdUScpe:2.3:a:centreon:centreon_web:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-05-04modified 2026-06-17

related (2,185)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-87886US	—OT critical	0.23% (14th)	KEV	2026-09-17
Local privilege escalation due to insecure file permissions. The following products are affected: Acronis Backup plugin for cPanel & WHM (Linux) before build 1.9.3.1021, Acronis Ba…
CVE-2025-24085US	critical10.0OT critical	17.5% (97th)	KEV	2025-01-27
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3, iPadOS 17.7.6, macOS Sequoia 15.3, macOS Sonoma 14.7.5, macOS…
CVE-2024-55956US	critical9.8OT critical	94.0% (100th)	KEV	2024-12-13
In Cleo Harmony before 5.8.0.24, VLTrader before 5.8.0.24, and LexiCom before 5.8.0.24, an unauthenticated user can import and execute arbitrary Bash or PowerShell commands on the…
CVE-2024-51378US	critical9.8OT critical	94.7% (100th)	KEV	2024-10-29
getresetstatus in dns/views.py and ftp/views.py in CyberPanel (aka Cyber Panel) before 1c0c6cb allows remote attackers to bypass authentication and execute arbitrary commands via /…
CVE-2023-29360US	—OT critical	21.6% (98th)	KEV	2023-06-14
Microsoft Streaming Service Elevation of Privilege Vulnerability

+2180 more

references (5)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan