CVE-2023-33476: ReadyMedia (MiniDLNA) versions from 1.1.15 up to 1.3.2 is vulnerable to Buffer Overflow

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2023-33476 is a critical-severity flaw (CVSS 9.8) affecting readymedia. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ReadyMedia (MiniDLNA) versions from 1.1.15 up to 1.3.2 is vulnerable to Buffer Overflow. The vulnerability is caused by incorrect validation logic when handling HTTP requests using chunked transport encoding. This results in other code later using attacker-controlled chunk values that exceed the length of the allocated buffer, resulting in out-of-bounds read/write.

Why this priority

Critical severity
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	2.1% (top 19%)
CISA exploited list	No
Weakness	CWE-787
Published	2023-06-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: readymedia project

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

Am I affected?

Timeline

2023-06-02 14:15 UTCPublished CVE record published
2026-06-17 06:01 UTCUpdated Record last modified

readymedia project readymedia UPGRADE

Affected: >= 1.1.15 and <= 1.3.2

Fixed in: newer than 1.3.2

Safe to downgrade to: a release before 1.1.15

1. Check installed version

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

2. UPGRADE to newer than 1.3.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade readymedia

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 1.1.15 (Debian / Ubuntu)

apt-cache madison readymedia sudo apt install readymedia=<VERSION_BEFORE_1.1.15> sudo apt-mark hold readymedia

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

dnf --showduplicates list readymedia sudo dnf downgrade readymedia-<VERSION_BEFORE_1.1.15> sudo dnf versionlock add readymedia

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-2023-33476?

readymedia: upgrade to newer than 1.3.2. Exact commands for each OS are on this page.

Is CVE-2023-33476 being exploited?

CVE-2023-33476 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-2023-33476 affect?

CVE-2023-33476 affects readymedia. Severity is critical (CVSS 9.8). ReadyMedia (MiniDLNA) versions from 1.1.15 up to 1.3.2 is vulnerable to Buffer Overflow. The vulnerability is caused by incorrect validation logic when handling HTTP requests using chunked transport encoding. This results in other code late

How urgent is CVE-2023-33476?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-47430 HIGH 7.5 DOWNGRADE Stack-buffer-overflow vulnerability in ReadyMedia (MiniDLNA) v1.3.3 allows attackers to cause a denial of serv

References

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