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CVE-2023-40545

27
FAUCET Score

CVE-2023-40545 is a critical authentication bypass vulnerability affecting Ping Identity PingFederate 11.3 when an OAuth2 Client uses client_secret_jwt for authentication. With a CVSS score of 9.8, this flaw allows unauthenticated attackers to achieve full compromise (confidentiality, integrity, availability) through specially crafted network requests, requiring no user interaction. While the vulnerability is severe and has a high FAUCET Risk Score of 76/100, there is currently no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
11.3.0CPE matchmatch criteria
cpe:2.3:a:pingidentity:pingfederate:11.3.0:*:*:*:*:*:*:*
>= 11.3.0, <= 11.3.2CPE match
cpe:2.3:a:pingidentity:pingfederate:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.93%
Probability of exploitation in next 30 days
EPSS Percentile
57.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0093 is in the 42nd percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

docs.pingidentity.com / r/en-us/pingfederate-113/hro1701116403236
Release Notes
support.pingidentity.com / s/article/SECADV040-PingFederate-OAuth-Client-Authentication-Bypass
Permissions Required
pingidentity.com / en/resources/downloads/pingfederate/previous-releases.html
Release Notes