CVE-2022-28381: Mediaserver.exe in ALLMediaServer 1.6 has a stack-based buffer overflow that allows remote attackers to execut

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2022-28381 is a critical-severity flaw (CVSS 9.8) affecting allmediaserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Mediaserver.exe in ALLMediaServer 1.6 has a stack-based buffer overflow that allows remote attackers to execute arbitrary code via a long string to TCP port 888, a related issue to CVE-2017-17932.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference
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	70.4% (top 1%)
CISA exploited list	No
Weakness	CWE-787
Published	2022-04-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: allmediaserver

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

Am I affected?

Timeline

2022-04-03 19:15 UTCPublished CVE record published
2026-06-17 04:38 UTCUpdated Record last modified

allmediaserver allmediaserver DOWNGRADE

Affected: 1.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.6

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.6 (Debian / Ubuntu)

apt-cache madison allmediaserver sudo apt install allmediaserver=<VERSION_BEFORE_1.6> sudo apt-mark hold allmediaserver

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

dnf --showduplicates list allmediaserver sudo dnf downgrade allmediaserver-<VERSION_BEFORE_1.6> sudo dnf versionlock add allmediaserver

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.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · nemo · FIXED · 6.8.0-1.fc46 · FEDORA-2026-0edead723f · source

sudo dnf upgrade --advisory=FEDORA-2026-0edead723f

Fedora ELN · composer · FIXED · 2.11.1-1.eln159 · FEDORA-2026-cb4f992456 · source

sudo dnf upgrade --advisory=FEDORA-2026-cb4f992456

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: DShankle/CVE-2022-28381_PoC (0 stars)
Metasploit: ALLMediaServer 1.6 SEH Buffer Overflow

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-2022-28381?

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

Is CVE-2022-28381 being exploited?

CVE-2022-28381 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-2022-28381 affect?

CVE-2022-28381 affects allmediaserver. Severity is critical (CVSS 9.8). Mediaserver.exe in ALLMediaServer 1.6 has a stack-based buffer overflow that allows remote attackers to execute arbitrary code via a long string to TCP port 888, a related issue to CVE-2017-17932.

How urgent is CVE-2022-28381?

Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-28480 CRITICAL 9.8 DOWNGRADE ALLMediaServer 1.6 is vulnerable to Buffer Overflow via MediaServer.exe.

References

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