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HIGH

CVE-2026-63076

CVSS v3

7.5

HIGH

EPSS Score

1.3 %

exploit probability

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

Issue summary: OpenSSL CMP password based protection verification only checks whether the protectionAlg parameter was not NULL and not its ASN.1 type, before treating it as a PBMParameter. A crafted message can contain a parameter of a different type, which is then dereferenced as an invalid pointer. Impact summary: A remote, unauthenticated attacker can crash an application acting as a CMP server that accepts PBM-protected messages, or a CMP client talking to a malicious or intercepted CMP ser

Technical details

CVSS v3 Vector
3.1
Published
2026-08-25
Last Modified
2026-08-25

Frequently asked questions

What is CVE-2026-63076?

Issue summary: OpenSSL CMP password based protection verification only checks whether the protectionAlg parameter was not NULL and not its ASN.1 type, before treating it as a PBMParameter. A crafted message can contain a parameter of a different type, which is then dereferenced as an invalid pointer. Impact summary: A remote, unauthenticated attacker can crash an application acting as a CMP server that accepts PBM-protected messages, or a CMP client talking to a malicious or intercepted CMP ser

Is CVE-2026-63076 actively exploited?

Active exploitation of CVE-2026-63076 has not been confirmed. The EPSS score is 1.3%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-63076?

CVE-2026-63076 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string 3.1.

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