CVE-2025-54764

CVSS 6.2 Medium
  • CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  • Published: 2025-10-20T22:15:37.060
  • Last modified: 1761075085

Summary

🛡️ Vulnerability overview CVE-2025-54764 Mbed TLS before 3.6.5 allows a local timing attack against certain RSA operations, and direct calls to mbedtls_mpi_mod_inv or mbedtls_mpi_gcd. 📊 Technical details Severity: MEDIUM CVSS: 6.2 Vendor: Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N 🧩 Affected products Not specified. 🚨 Recommended mitigations Update to the latest available version Monitor logs and network traffic Apply least-privilege and segment the network 🔗 References https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2025-10-ssbleed-mstep/https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/ 🧭 Related vulnerabilities No related CVEs. Subscribe for CVE alerts Mbed TLS before 3.6.5 allows a local timing…

Technical details

    Severity & risk metrics

    CVSS: 6.2 (MEDIUM)

    Affected products & vendors

    Vendors not specified.

    Exploit & mitigation

    No vendor patch links provided.

    References & resources

    No references.


    🛡️ Vulnerability overview CVE-2025-54764

    Mbed TLS before 3.6.5 allows a local timing attack against certain RSA operations, and direct calls to mbedtls_mpi_mod_inv or mbedtls_mpi_gcd.

    📊 Technical details

    • Severity: MEDIUM
    • CVSS: 6.2
    • Vendor:
    • Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

    🧩 Affected products

    • Not specified.
    • Update to the latest available version
    • Monitor logs and network traffic
    • Apply least-privilege and segment the network

    🔗 References

    • No related CVEs.

    Subscribe for CVE alerts

    Mbed TLS before 3.6.5 allows a local timing attack against certain RSA operations, and direct calls to mbedtls_mpi_mod_inv or mbedtls_mpi_gcd.

    Related CVE by CWE

    No related CWE found.

    Top CVE for Vendor

    No vendor taxonomy on this entry.

    Recently Exploited Similar Vulnerabilities

    No recent KEV-listed items for this vendor/product.

    How to fix CVE-2025-54764

    CVE-2025-54764 is a medium severity vulnerability affecting the affected product.

    Description: Summary 🛡️ Vulnerability overview CVE-2025-54764 Mbed TLS before 3.6.5 allows a local timing attack against certain RSA operations, and direct calls to mbedtls_mpi_mod_inv or mbedtls_mpi_gcd. 📊 Technical details Severity: MEDIUM CVSS: 6.2 Vendor: Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N 🧩 Affected products Not specified. 🚨 Recommended mitigations Update to the latest available version Monitor logs and network traffic Apply […]

    Exploit Difficulty: MEDIUM
    ⏱️ Time to exploit: 1-4 hours
    🛠️ Required skills: Intermediate security knowledge
    💰 Public exploits: May be available

    How to Fix:

    1 Identify affected systems

    - Check if you're running the affected product

    2 Immediate actions

    - Update to the latest patched version
    - If patching is not immediately possible: restrict network exposure, apply least-privilege access

    3 Verification

    - Test the fix in a staging environment first
    - Review logs for signs of exploitation
    - Monitor for IOCs (Indicators of Compromise)

    4 Long-term prevention

    - Enable automatic security updates
    - Set up vulnerability monitoring
    - Review and harden security configurations

    Vendor Advisory: https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2025-10-ssbleed-mstep/https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/

    Exploit Difficulty Assessment

    MEDIUM
    ⏱️ Time to Exploit: 1-4 hours
    🛠️ Skills Required: Intermediate security knowledge
    💰 Public Exploits: May be available

    Vulnerability Timeline

    Oct 20, 2025
    Vulnerability Published

    CVE details first published to NVD database

    Jan 01, 1970
    Last Modified

    CVE details were updated

    Oct 28, 2025
    Imported to Database

    Added to this CVE tracking system

    Detection Rules & IOCs

    No specific detection rules generated for this vulnerability type.

    No vendor/product data available.