CVE-2025-69420 Details
Issue summary: A type confusion vulnerability exists in the TimeStamp Response
verification code where an ASN1_TYPE union member is accessed without first
validating the type, causing an invalid or NULL pointer dereference when
processing a malformed TimeStamp Response file.

Impact summary: An application calling TS_RESP_verify_response() with a
malformed TimeStamp Response can be caused to dereference an invalid or
NULL pointer when reading, resulting in a Denial of Service.

The functions ossl_ess_get_signing_cert() and ossl_ess_get_signing_cert_v2()
access the signing cert attribute value without validating its type.
When the type is not V_ASN1_SEQUENCE, this results in accessing invalid memory
through the ASN1_TYPE union, causing a crash.

Exploiting this vulnerability requires an attacker to provide a malformed
TimeStamp Response to an application that verifies timestamp responses. The
TimeStamp protocol (RFC 3161) is not widely used and the impact of the
exploit is just a Denial of Service. For these reasons the issue was
assessed as Low severity.

The FIPS modules in 3.5, 3.4, 3.3 and 3.0 are not affected by this issue,
as the TimeStamp Response implementation is outside the OpenSSL FIPS module
boundary.

OpenSSL 3.6, 3.5, 3.4, 3.3, 3.0 and 1.1.1 are vulnerable to this issue.

OpenSSL 1.0.2 is not affected by this issue.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2025-69420
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%).
0.2 Probability of exploitation activity being observed over the next 30 days (42st percentile)
CVSS score for CVE-2025-69420
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.
7.5 High
Products affected by CVE-2025-69420
OpenSSL 1.1.1
OpenSSL 1.1.1a
OpenSSL 1.1.1b
OpenSSL 1.1.1c
OpenSSL 1.1.1d
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-2025-69420 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 64,560 28.26%
JP 19,716 8.63%
DE 16,644 7.28%
NL 12,415 5.43%
CA 9,616 4.21%
FR 9,591 4.20%
IN 8,631 3.78%
CN 7,176 3.14%
KR 6,459 2.83%
GB 6,397 2.80%

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CVE-2025-69420 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 104,356 70.33%
Telecommunications 28,546 19.24%
Education 7,942 5.35%
Government/Politics 2,236 1.51%
Business Services 883 0.60%
Finance 581 0.39%
Manufacturing 540 0.36%
Transportation 441 0.30%
Utilities 396 0.27%
Healthcare/Wellness 333 0.22%

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