CVE-2023-39231Network attack vector

MFA bypass via unauthenticated device pairing

Published Oct 24, 2023 · Updated Sep 11, 2024

Authentication bypass in Ping Identity PingOne MFA Integration Kit 2.2 allows remote authenticated users to register a new MFA device. The PingOne MFA adapter's pairing flow creates a device without authenticating through an existing registered second factor. A victim's first-factor credentials and user interaction are required, after which the added device can satisfy MFA for that account.

CVSS severity7.3
High
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Ping Identity PingOne MFA Integration Kit 2.2 allows remote authenticated users to register a new MFA device. The PingOne MFA adapter's pairing flow creates a device without authenticating through an existing registered second factor. A victim's first-factor credentials and user interaction are required, after which the added device can satisfy MFA for that account.

The record

CVE
CVE-2023-39231
Published
Oct 24, 2023
Updated
Sep 11, 2024
Vendor
Ping Identity
Product
PingOne MFA Integration Kit
Classifications
CWE-306, CWE-288, CAPEC-115, T1098.005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.2 <2.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ping Identity · PingOne MFA Integration Kitversion=2.2 <2.2.1

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
7.3Ping IdentityCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
CWE-288Authentication Bypass Using an Alternate Path or Channel
CAPEC-115Authentication Bypass
T1098.005Device Registration

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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