CVE-2018-17317: FruityWifi (aka PatatasFritas/PatataWifi) 2.1 allows remote attackers to execute arbitrary commands via shell

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2018-17317 is a critical-severity flaw (CVSS 9.8) affecting fruitywifi. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

FruityWifi (aka PatatasFritas/PatataWifi) 2.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the io_mode, ap_mode, io_action, io_in_iface, io_in_set, io_in_ip, io_in_mask, io_in_gw, io_out_iface, io_out_set, io_out_mask, io_out_gw, iface, or domain parameter to /www/script/config_iface.php, or the newSSID, hostapd_secure, hostapd_wpa_passphrase, or supplicant_ssid parameter to /www/page_config.php.

Why this priority

Critical severity
EPSS top 9%: very likely to be exploited
Public exploit reference
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	4.3% (top 9%)
CISA exploited list	No
Weakness	CWE-78
Published	2018-09-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: fruitywifi project

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

Am I affected?

Timeline

2018-09-21 18:29 UTCPublished CVE record published
2026-06-17 01:45 UTCUpdated Record last modified

fruitywifi project fruitywifi DOWNGRADE

Affected: 2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.1

1. Check installed version

apt-cache policy fruitywifi || rpm -q fruitywifi || fruitywifi --version

2. No fixed release: DOWNGRADE to a release before 2.1 (Debian / Ubuntu)

apt-cache madison fruitywifi sudo apt install fruitywifi=<VERSION_BEFORE_2.1> sudo apt-mark hold fruitywifi

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

dnf --showduplicates list fruitywifi sudo dnf downgrade fruitywifi-<VERSION_BEFORE_2.1> sudo dnf versionlock add fruitywifi

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-2018-17317?

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

Is CVE-2018-17317 being exploited?

CVE-2018-17317 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-2018-17317 affect?

CVE-2018-17317 affects fruitywifi. Severity is critical (CVSS 9.8). FruityWifi (aka PatatasFritas/PatataWifi) 2.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the io_mode, ap_mode, io_action, io_in_iface, io_in_set, io_in_ip, io_in_mask, io_in_gw, io_out_iface, io_out_se

How urgent is CVE-2018-17317?

Priority 67/100. Critical severity; EPSS top 9%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2020-24849 HIGH 8.8 UPGRADE A remote code execution vulnerability is identified in FruityWifi through 2.4
CVE-2020-24848 HIGH 7.8 UPGRADE FruityWifi through 2.4 has an unsafe Sudo configuration [(ALL : ALL) NOPASSWD: ALL]
CVE-2020-24847 MEDIUM 4.3 UPGRADE A Cross-Site Request Forgery (CSRF) vulnerability is identified in FruityWifi through 2.4
CVE-2018-19168 CRITICAL 9.8 UPGRADE Shell Metacharacter Injection in www/modules/save.php in FruityWifi (aka PatatasFritas/PatataWifi) through 2.4

References

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