CVE-2023-36658: An issue was discovered in OPSWAT MetaDefender KIOSK 4.6.1.9996

Routine

HIGH 7.8UPGRADEUPGRADE

CVE-2023-36658 is a high-severity flaw (CVSS 7.8) affecting media validation agent, metadefender kiosk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in OPSWAT MetaDefender KIOSK 4.6.1.9996. It has an unquoted service path that can be abused locally.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-428
Published	2023-09-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: opswat

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

Am I affected?

Timeline

2023-09-15 05:15 UTCPublished CVE record published
2026-06-17 06:06 UTCUpdated Record last modified

opswat media validation agent UPGRADE

Affected: >= 2.0.0 and < 2.0.7

Fixed in: 2.0.7

Safe to downgrade to: a release before 2.0.0

1. Check installed version

apt-cache policy media-validation-agent || rpm -q media-validation-agent || media-validation-agent --version

2. UPGRADE to 2.0.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade media-validation-agent

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade media-validation-agent

Note

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

3. If no update is available yet, DOWNGRADE to a release before 2.0.0 (Debian / Ubuntu)

apt-cache madison media-validation-agent sudo apt install media-validation-agent=<VERSION_BEFORE_2.0.0> sudo apt-mark hold media-validation-agent

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list media-validation-agent sudo dnf downgrade media-validation-agent-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add media-validation-agent

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.

opswat metadefender kiosk UPGRADE

Affected: >= 4.2 and < 4.6.2

Fixed in: 4.6.2

Safe to downgrade to: a release before 4.2

1. Check installed version

apt-cache policy metadefender-kiosk || rpm -q metadefender-kiosk || metadefender-kiosk --version

2. UPGRADE to 4.6.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade metadefender-kiosk

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade metadefender-kiosk

Note

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

3. If no update is available yet, DOWNGRADE to a release before 4.2 (Debian / Ubuntu)

apt-cache madison metadefender-kiosk sudo apt install metadefender-kiosk=<VERSION_BEFORE_4.2> sudo apt-mark hold metadefender-kiosk

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list metadefender-kiosk sudo dnf downgrade metadefender-kiosk-<VERSION_BEFORE_4.2> sudo dnf versionlock add metadefender-kiosk

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-2023-36658?

media validation agent: upgrade to 2.0.7; metadefender kiosk: upgrade to 4.6.2. Exact commands for each OS are on this page.

Is CVE-2023-36658 being exploited?

CVE-2023-36658 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-2023-36658 affect?

CVE-2023-36658 affects media validation agent, metadefender kiosk. Severity is high (CVSS 7.8). An issue was discovered in OPSWAT MetaDefender KIOSK 4.6.1.9996. It has an unquoted service path that can be abused locally.

How urgent is CVE-2023-36658?

Priority 31/100. High severity

References

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