CVE-2018-19168: Shell Metacharacter Injection in www/modules/save.php in FruityWifi (aka PatatasFritas/PatataWifi) through 2.4

Q: How do I fix CVE-2018-19168?

fruitywifi: upgrade to newer than 2.4. Exact commands for each OS are on this page.

Q: Is CVE-2018-19168 being exploited?

CVE-2018-19168 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-19168 affect?

CVE-2018-19168 affects fruitywifi. Severity is critical (CVSS 9.8). Shell Metacharacter Injection in www/modules/save.php in FruityWifi (aka PatatasFritas/PatataWifi) through 2.4 allows remote attackers to execute arbitrary code with root privileges via a crafted mod_name parameter in a POST request. NOTE:

Q: How urgent is CVE-2018-19168?

Priority 63/100. Critical severity; EPSS top 6%: very likely to be exploited; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2018-19168 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.

Shell Metacharacter Injection in www/modules/save.php in FruityWifi (aka PatatasFritas/PatataWifi) through 2.4 allows remote attackers to execute arbitrary code with root privileges via a crafted mod_name parameter in a POST request. NOTE: unlike in CVE-2018-17317, the attacker does not need a valid session.

Why this priority

Critical severity
EPSS top 6%: very likely to be exploited
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	6.5% (top 6%)
CISA exploited list	No
Weakness	CWE-78
Published	2018-11-11
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

2018-11-11 00:29 UTCPublished CVE record published
2026-06-17 01:48 UTCUpdated Record last modified

fruitywifi project fruitywifi UPGRADE

Affected: <= 2.4

Fixed in: newer than 2.4

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade fruitywifi

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade fruitywifi

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2018-19168?

fruitywifi: upgrade to newer than 2.4. Exact commands for each OS are on this page.

Is CVE-2018-19168 being exploited?

CVE-2018-19168 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-2018-19168 affect?

CVE-2018-19168 affects fruitywifi. Severity is critical (CVSS 9.8). Shell Metacharacter Injection in www/modules/save.php in FruityWifi (aka PatatasFritas/PatataWifi) through 2.4 allows remote attackers to execute arbitrary code with root privileges via a crafted mod_name parameter in a POST request. NOTE:

How urgent is CVE-2018-19168?

Priority 63/100. Critical severity; EPSS top 6%: very likely to be exploited; 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-2018-17317 CRITICAL 9.8 DOWNGRADE FruityWifi (aka PatatasFritas/PatataWifi) 2.1 allows remote attackers to execute arbitrary commands via shell

References

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