CVE-2025-12816 is a vulnerability in the node-forge library affecting Red Hat OpenShift Service Mesh 3.2's Kiali 2.17.2 component. The flaw involves an interpretation conflict in ASN.1 parsing, allowing unauthenticated attackers to craft malicious ASN.1 structures that bypass downstream cryptographic verifications and security decisions. This results in a semantic divergence due to desynchronized schema validations. The vulnerability impacts multiple Red Hat products using node-forge for cryptographic operations. Red Hat rates this vulnerability as Important (high severity) with a CVSS v3 score of 8.7. Currently, no mitigation or patch meeting Red Hat's standards is available.

An unauthenticated attacker can exploit this vulnerability to bypass cryptographic verification mechanisms, potentially undermining the integrity and confidentiality of security decisions in affected applications. This could lead to unauthorized actions or acceptance of malicious data as valid. The vulnerability affects cryptographic operations relying on node-forge's ASN.1 parsing, impacting Red Hat OpenShift Service Mesh 3.2 and other Red Hat products using node-forge.

As per the Red Hat advisory, no mitigation or patch currently meets the criteria for ease of use, deployment, applicability, or stability. Users should apply all previously released errata relevant to their systems and monitor Red Hat advisories for future updates or fixes. Customers with Red Hat Technical Account Managers (TAM) can seek direct guidance. Upgrading to a fixed version when available is recommended once released.