CVE-2025-15468 Details
Issue summary: If an application using the SSL_CIPHER_find() function in
a QUIC protocol client or server receives an unknown cipher suite from
the peer, a NULL dereference occurs.

Impact summary: A NULL pointer dereference leads to abnormal termination of
the running process causing Denial of Service.

Some applications call SSL_CIPHER_find() from the client_hello_cb callback
on the cipher ID received from the peer. If this is done with an SSL object
implementing the QUIC protocol, NULL pointer dereference will happen if
the examined cipher ID is unknown or unsupported.

As it is not very common to call this function in applications using the QUIC
protocol and the worst outcome is Denial of Service, the issue was assessed
as Low severity.

The vulnerable code was introduced in the 3.2 version with the addition
of the QUIC protocol support.

The FIPS modules in 3.6, 3.5, 3.4 and 3.3 are not affected by this issue,
as the QUIC implementation is outside the OpenSSL FIPS module boundary.

OpenSSL 3.6, 3.5, 3.4 and 3.3 are vulnerable to this issue.

OpenSSL 3.0, 1.1.1 and 1.0.2 are not affected by this issue.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2025-15468
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.05 Probability of exploitation activity being observed over the next 30 days (16th percentile)
CVSS score for CVE-2025-15468
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
5.9 Medium
Products affected by CVE-2025-15468
OpenSSL 3.3.0
OpenSSL 3.3.1
OpenSSL 3.3.2
OpenSSL 3.3.3
OpenSSL 3.4.0
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
More on DVE scores

CVE-2025-15468 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 10,367 29.46%
DE 3,635 10.33%
JP 3,283 9.33%
FR 1,378 3.92%
GB 1,297 3.69%
CA 1,107 3.15%
RU 1,035 2.94%
NL 1,017 2.89%
IT 930 2.64%
IN 718 2.04%

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CVE-2025-15468 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 15,548 63.91%
Telecommunications 4,264 17.53%
Education 2,632 10.82%
Government/Politics 562 2.31%
Business Services 212 0.87%
Manufacturing 168 0.69%
Finance 149 0.61%
Healthcare/Wellness 100 0.41%
Transportation 96 0.39%
Utilities 86 0.35%

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