CVE-2023-39930: A first-factor authentication bypass vulnerability exists in the PingFederate with PingID Radius PCV when a MS

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HIGH 7.5UPGRADE

CVE-2023-39930 is a high-severity flaw (CVSS 7.5) affecting pingid radius pcv. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A first-factor authentication bypass vulnerability exists in the PingFederate with PingID Radius PCV when a MSCHAP authentication request is sent via a maliciously crafted RADIUS client request.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-288, CWE-306
Published	2023-10-25
Last modified	2026-06-17

Publisher (CNA): Ping Identity Corporation · Vendor: pingidentity

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

Am I affected?

Timeline

2023-10-25 18:17 UTCPublished CVE record published
2026-06-17 06:12 UTCUpdated Record last modified

pingidentity pingid radius pcv UPGRADE

Affected: >= 3.0.0 and < 3.0.3

Fixed in: 3.0.3

Safe to downgrade to: a release before 3.0.0

1. Check installed version

apt-cache policy pingid-radius-pcv || rpm -q pingid-radius-pcv || pingid-radius-pcv --version

2. UPGRADE to 3.0.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pingid-radius-pcv

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pingid-radius-pcv

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 3.0.0 (Debian / Ubuntu)

apt-cache madison pingid-radius-pcv sudo apt install pingid-radius-pcv=<VERSION_BEFORE_3.0.0> sudo apt-mark hold pingid-radius-pcv

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

dnf --showduplicates list pingid-radius-pcv sudo dnf downgrade pingid-radius-pcv-<VERSION_BEFORE_3.0.0> sudo dnf versionlock add pingid-radius-pcv

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-2023-39930?

pingid radius pcv: upgrade to 3.0.3. Exact commands for each OS are on this page.

Is CVE-2023-39930 being exploited?

CVE-2023-39930 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-2023-39930 affect?

CVE-2023-39930 affects pingid radius pcv. Severity is high (CVSS 7.5). A first-factor authentication bypass vulnerability exists in the PingFederate with PingID Radius PCV when a MSCHAP authentication request is sent via a maliciously crafted RADIUS client request.

How urgent is CVE-2023-39930?

Priority 41/100. High severity

References

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