CVE-2021-41994

Offline MFA bypass via misconfigured RSA

Published Apr 30, 2022 · Updated Aug 4, 2024

Cryptographic weakness in Ping Identity PingID Mobile Application before 1.19 allows attackers to bypass MFA through an offline attack. The app's RSA configuration permits precomputed dictionary attacks against authentication material used by the offline MFA flow. Exploitation requires physical access, high privileges, and PingID Windows Login offline MFA, enabling unauthorized authentication without interrupting service.

CVSS severity6.6
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cryptographic weakness in Ping Identity PingID Mobile Application before 1.19 allows attackers to bypass MFA through an offline attack. The app's RSA configuration permits precomputed dictionary attacks against authentication material used by the offline MFA flow. Exploitation requires physical access, high privileges, and PingID Windows Login offline MFA, enabling unauthorized authentication without interrupting service.

The record

CVE
CVE-2021-41994
Published
Apr 30, 2022
Updated
Aug 4, 2024
Vendor
Ping Identity
Product
PingID Mobile Application
Classifications
CWE-330, CWE-310, T1110.002
Attack vector
physical
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 30, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=unspecified <1.19

What conditions does exploitation require?

Attack vectorphysical
Required privilegesUnavailable in this record.

What is affected?

Ping Identity · PingID Mobile Applicationversion=unspecified <1.19

Published CVSS scores

4.8NISTCVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
6.6Ping Identity CorporationCVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N
1.9NISTAV:L/AC:M/Au:N/C:P/I:N/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)
Vectorphysical
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-330Use of Insufficiently Random Values
CWE-310Cryptographic Issues
T1110.002Password Cracking

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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