CVE-2017-6823: Fiyo CMS 2.0.6.1 allows remote authenticated users to gain privileges via a modified level parameter to dapur/

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HIGH 8.8DOWNGRADE

CVE-2017-6823 is a high-severity flaw (CVSS 8.8) affecting fiyo cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Fiyo CMS 2.0.6.1 allows remote authenticated users to gain privileges via a modified level parameter to dapur/ in an app=user&act=edit action.

Why this priority

High severity
EPSS top 5%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	8.0% (top 5%)
CISA exploited list	No
Weakness	CWE-294
Published	2017-03-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: fiyo

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

Am I affected?

Timeline

2017-03-12 05:59 UTCPublished CVE record published
2026-06-17 01:23 UTCUpdated Record last modified

fiyo fiyo cms DOWNGRADE

Affected: 2.0.6.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.6.1

1. Check installed version

apt-cache policy fiyo-cms || rpm -q fiyo-cms || fiyo-cms --version

2. No fixed release: DOWNGRADE to a release before 2.0.6.1 (Debian / Ubuntu)

apt-cache madison fiyo-cms sudo apt install fiyo-cms=<VERSION_BEFORE_2.0.6.1> sudo apt-mark hold fiyo-cms

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

dnf --showduplicates list fiyo-cms sudo dnf downgrade fiyo-cms-<VERSION_BEFORE_2.0.6.1> sudo dnf versionlock add fiyo-cms

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Fiyo CMS 2.0.6.1 - Privilege Escalation

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-2017-6823?

fiyo cms: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-6823 being exploited?

CVE-2017-6823 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-2017-6823 affect?

CVE-2017-6823 affects fiyo cms. Severity is high (CVSS 8.8). Fiyo CMS 2.0.6.1 allows remote authenticated users to gain privileges via a modified level parameter to dapur/ in an app=user&act=edit action.

How urgent is CVE-2017-6823?

Priority 59/100. High severity; EPSS top 5%: very likely to be exploited; Public exploit reference

Related CVEs

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CVE-2018-18545 MEDIUM 6.1 DOWNGRADE Fiyo CMS 2.0.7 has XSS via the dapur\apps\app_user\edit_user.php name parameter.
CVE-2017-8853 HIGH 7.5 DOWNGRADE Fiyo CMS v2.0.7 has an arbitrary file delete vulnerability in dapur/apps/app_config/controller/backuper.php vi
CVE-2017-7625 CRITICAL 9.8 DOWNGRADE In Fiyo CMS 2.x through 2.0.7, attackers may upload a webshell via the content parameter to "/dapur/apps/app_t
CVE-2017-17104 HIGH 7.5 DOWNGRADE Fiyo CMS 2.0.7 has an arbitrary file read vulnerability in dapur/apps/app_theme/libs/check_file.php via $_GET[

References

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