CVE-2018-18912: An issue was discovered in Easy File Sharing (EFS) Web Server 7.2

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2018-18912 is a critical-severity flaw (CVSS 9.8) affecting easy file sharing web server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Easy File Sharing (EFS) Web Server 7.2. A stack-based buffer overflow vulnerability occurs when a malicious POST request has been made to forum.ghp upon creating a new topic in the forums, which allows remote attackers to execute arbitrary code.

Why this priority

Critical severity
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	3.5% (top 11%)
CISA exploited list	No
Weakness	CWE-787
Published	2019-05-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: sharing-file

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

Am I affected?

Timeline

2019-05-13 20:29 UTCPublished CVE record published
2026-06-17 01:48 UTCUpdated Record last modified

sharing-file easy file sharing web server DOWNGRADE

Affected: 7.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.2

1. Check installed version

apt-cache policy easy-file-sharing-web-server || rpm -q easy-file-sharing-web-server || easy-file-sharing-web-server --version

2. No fixed release: DOWNGRADE to a release before 7.2 (Debian / Ubuntu)

apt-cache madison easy-file-sharing-web-server sudo apt install easy-file-sharing-web-server=<VERSION_BEFORE_7.2> sudo apt-mark hold easy-file-sharing-web-server

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

dnf --showduplicates list easy-file-sharing-web-server sudo dnf downgrade easy-file-sharing-web-server-<VERSION_BEFORE_7.2> sudo dnf versionlock add easy-file-sharing-web-server

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-2018-18912?

easy file sharing web server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-18912 being exploited?

CVE-2018-18912 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-2018-18912 affect?

CVE-2018-18912 affects easy file sharing web server. Severity is critical (CVSS 9.8). An issue was discovered in Easy File Sharing (EFS) Web Server 7.2. A stack-based buffer overflow vulnerability occurs when a malicious POST request has been made to forum.ghp upon creating a new topic in the forums, which allows remote atta

How urgent is CVE-2018-18912?

Priority 67/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-9059 CRITICAL 9.8 DOWNGRADE Stack-based buffer overflow in Easy File Sharing (EFS) Web Server 7.2 allows remote attackers to execute arbit

References

← Back to latest CVEs