CVE-2025-12888

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Source

https://cve.org/CVERecord?id=CVE-2025-12888

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-12888.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2025-12888

Downstream

Published

2025-11-21T22:50:30Z

Modified

2026-10-24T10:30:28Z

Severity

1.0 (Low) CVSS_V4 - CVSS:4.0/AV:P/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:L/SA:N CVSS Calculator

Summary

Constant Time Issue with Xtensa-based ESP32 and X22519

Details

Vulnerability in X25519 constant-time cryptographic implementations due to timing side channels introduced by compiler optimizations and CPU architecture limitations, specifically with the Xtensa-based ESP32 chips. If targeting Xtensa it is recommended to use the low memory implementations of X25519, which is now turned on as the default for Xtensa.

Database specific

{
    "cna_assigner":  "wolfSSL",
    "cwe_ids":  [
        "CWE-203"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12888.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "fixed":  "5.8.4"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "StandardRange"
                }
            ]
        }
    ]
}

References

Affected packages

Git / github.com/wolfssl/wolfssl

Affected ranges

Type

GIT

Repo

https://github.com/wolfssl/wolfssl

Events

Introduced

decea12e223869c8f8f3ab5a53dc90b69f436eb2

Last Affected

decea12e223869c8f8f3ab5a53dc90b69f436eb2

Database specific

Show details

{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:wolfssl:wolfssl:5.8.2:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "5.8.2"
                },
                {
                    "last_affected":  "5.8.2"
                }
            ],
            "source":  "CPE_STRING"
        }
    ]
}

Affected versions

5.*

5.8.2

v5.*

v5.8.2-stable

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-12888.json"