CVE-2024-23985: EzServer 6.4.017 allows a denial of service (daemon crash) via a long string, such as one for the RNTO command

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2024-23985 is a high-severity flaw (CVSS 7.5) affecting ezserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

EzServer 6.4.017 allows a denial of service (daemon crash) via a long string, such as one for the RNTO command.

Why this priority

High 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	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.6% (top 11%)
CISA exploited list	No
Published	2024-01-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ezhometech

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

Am I affected?

Timeline

2024-01-25 05:15 UTCPublished CVE record published
2026-06-17 07:14 UTCUpdated Record last modified

ezhometech ezserver DOWNGRADE

Affected: 6.4.017

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.4.017

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 6.4.017 (Debian / Ubuntu)

apt-cache madison ezserver sudo apt install ezserver=<VERSION_BEFORE_6.4.017> sudo apt-mark hold ezserver

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

dnf --showduplicates list ezserver sudo dnf downgrade ezserver-<VERSION_BEFORE_6.4.017> sudo dnf versionlock add ezserver

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.

Metasploit: EZHomeTech EzServer Stack Buffer Overflow Vulnerability

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-2024-23985?

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

Is CVE-2024-23985 being exploited?

CVE-2024-23985 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-2024-23985 affect?

CVE-2024-23985 affects ezserver. Severity is high (CVSS 7.5). EzServer 6.4.017 allows a denial of service (daemon crash) via a long string, such as one for the RNTO command.

How urgent is CVE-2024-23985?

Priority 59/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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