ALPINE-CVE-2026-42767

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2026-42767
Published: 09 Jun 2026, 17:17
Last modified:08 Jul 2026, 04:32

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
5.9 MEDIUM
3.1 (osv_alpine)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

09 Jun 2026, 17:17
Published
Vulnerability first disclosed
08 Jul 2026, 04:32
Last Modified
Vulnerability information updated

Description

Issue summary: An attacker-controlled CMP (Certificate Management Protocol) server could trigger a NULL pointer dereference in a CMP client application. Impact summary: A NULL pointer dereference causes a crash of the application and a Denial of Service. An attacker controlling a CMP server (or acting as a man-in-the-middle) could craft a CMP response containing a CRMF (Certificate Request Message Format) CertRepMessage with an EncryptedValue structure where the symmAlg field has an algorithm OID but no parameters field. When the OpenSSL CMP client processes this response, the NULL dereference occurs, causing a crash of the CMP client. Applications that process untrusted CMP/CRMF messages may be affected. The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Systems

  • alpine•openssl

    < 3.5.7-r0 | < 3.5.7-r0 | < 3.5.7-r0 | ≥ 3.0.0, < 3.5.7-r0 | ≥ 3.0.0, < 3.5.7-r0 | ≥ 3.0.0, < 3.5.7-r0

References (1)