JLSEC-2025-221

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Source

https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2025/JLSEC-2025-221.md

Import Source

https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2025/JLSEC-2025-221.json

JSON Data

https://api.test.osv.dev/v1/vulns/JLSEC-2025-221

Upstream

CVE-2021-36647

Published

2025-11-21T15:59:04Z

Modified

2026-07-25T18:23:58Z

Severity

4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator

Summary

Use of a Broken or Risky Cryptographic Algorithm in the function `mbedtls_mpi_exp_mod()` in lignum.c...

Details

Use of a Broken or Risky Cryptographic Algorithm in the function mbedtls_mpi_exp_mod() in lignum.c in Mbed TLS Mbed TLS all versions before 3.0.0, 2.27.0 or 2.16.11 allows attackers with access to precise enough timing and memory access information (typically an untrusted operating system attacking a secure enclave such as SGX or the TrustZone secure world) to recover the private keys used in RSA.

Database specific

{
    "license":  "CC-BY-4.0",
    "sources":  [
        {
            "database_specific":  {
                "status":  "Modified"
            },
            "html_url":  "https://nvd.nist.gov/vuln/detail/CVE-2021-36647",
            "id":  "CVE-2021-36647",
            "imported":  "2026-07-17T20:46:37.922Z",
            "modified":  "2026-06-17T03:58:59.387Z",
            "published":  "2023-01-17T21:15:10.880Z",
            "url":  "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2021-36647"
        }
    ]
}

References

Affected packages

Julia / MbedTLS_jll

Package

Name: MbedTLS_jll
Purl: pkg:julia/MbedTLS_jll?uuid=c8ffd9c3-330d-5841-b78e-0817d7145fa1

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

2.27.0+0

Database specific

source

"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2025/JLSEC-2025-221.json"