CVE-2026-14457

01/Description

Issue summary: In a server or client configuration with RFC7250 Raw Public Keys (RPKs) enabled, and only the private key (with no associated certificate) configured locally, a NULL pointer dereference may occur when the remote peer solicits raw public keys and also sends the typically omitted "signature_algorithms_cert" TLS extension. Impact summary: The impact is limited to a possible Denial of Service as a result of an application abort, no data disclosure or remote command execution are possible. CWE: CWE-476: NULL Pointer Dereference Description: While a passing comment in sample code in the documentation suggests that key-only RPK configurations are supported, the best-practice RPK configuration is to always configure a corresponding certificate (possibly self-signed or signed by any convenient CA). When the private key is configured along with a matching certificate, the "signature_algorithms_cert" extension is handled reliably even without the fix, and peer clients or servers that don't support raw public keys may be able to complete a TLS connection by pinning or verifying the corresponding certificate or its public key. Deployments that prefer to configure just a private key with no certificate need to upgrade to an updated release as noted below. FIPS impact: no No FIPS modules are affected by this issue, as the SSL protocol implementation is outside the OpenSSL FIPS module boundary.

02/Affected products

openssl: openssl

03/References5

• openssl-library.org/news/secadv/20260825.txt Vendor Advisory
• github.com/openssl/openssl/commit/1e8c398db67404babd3e5af999bb6… Patch
• github.com/openssl/openssl/commit/581aaa0f0a35d214740f0fe1f5283… Patch
• github.com/openssl/openssl/commit/d0af20478688a6aa2f59d61caa3f8… Patch
• github.com/openssl/openssl/commit/dad836b071da6579510c968615848… Patch