CVE-2023-37117: A heap-use-after-free vulnerability was found in live555 version 2023.05.10 while handling the SETUP.

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2023-37117 is a critical-severity flaw (CVSS 9.8) affecting live555. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A heap-use-after-free vulnerability was found in live555 version 2023.05.10 while handling the SETUP.

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	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-416
Published	2024-01-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: live555

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

Am I affected?

Timeline

2024-01-12 07:15 UTCPublished CVE record published
2026-06-17 06:07 UTCUpdated Record last modified

live555 live555 DOWNGRADE

Affected: 2023.05.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 2023.05.10

1. Check installed version

apt-cache policy live555 || rpm -q live555 || live555 --version

2. No fixed release: DOWNGRADE to a release before 2023.05.10 (Debian / Ubuntu)

apt-cache madison live555 sudo apt install live555=<VERSION_BEFORE_2023.05.10> sudo apt-mark hold live555

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

dnf --showduplicates list live555 sudo dnf downgrade live555-<VERSION_BEFORE_2023.05.10> sudo dnf versionlock add live555

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-2023-37117?

live555: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-37117 being exploited?

CVE-2023-37117 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-2023-37117 affect?

CVE-2023-37117 affects live555. Severity is critical (CVSS 9.8). A heap-use-after-free vulnerability was found in live555 version 2023.05.10 while handling the SETUP.

How urgent is CVE-2023-37117?

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

References

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