CVE-2017-8853: Fiyo CMS v2.0.7 has an arbitrary file delete vulnerability in dapur/apps/app_config/controller/backuper.php vi

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HIGH 7.5REMOTEDOWNGRADE

CVE-2017-8853 is a high-severity flaw (CVSS 7.5) affecting fiyo cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Fiyo CMS v2.0.7 has an arbitrary file delete vulnerability in dapur/apps/app_config/controller/backuper.php via directory traversal in the file parameter during an act=db action.

Why this priority

High severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-22
Published	2017-05-09
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

2017-05-09 16:29 UTCPublished CVE record published
2026-06-17 01:27 UTCUpdated Record last modified

fiyo fiyo cms DOWNGRADE

Affected: 2.0.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.7

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 2.0.7 (Debian / Ubuntu)

apt-cache madison fiyo-cms sudo apt install fiyo-cms=<VERSION_BEFORE_2.0.7> 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_2.0.7> 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.

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-2017-8853?

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

Is CVE-2017-8853 being exploited?

CVE-2017-8853 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-2017-8853 affect?

CVE-2017-8853 affects fiyo cms. Severity is high (CVSS 7.5). Fiyo CMS v2.0.7 has an arbitrary file delete vulnerability in dapur/apps/app_config/controller/backuper.php via directory traversal in the file parameter during an act=db action.

How urgent is CVE-2017-8853?

Priority 50/100. High severity; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

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-2017-7625 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-2017-6823 HIGH 8.8 DOWNGRADE Fiyo CMS 2.0.6.1 allows remote authenticated users to gain privileges via a modified level parameter to dapur/
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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