CVE-2025-54764

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.21% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 10.9% of scored records. A rank, not a probability.

NVD base score

6.2 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-10-20 00:00Z10 MO AGO

Last updated

2025-10-21 13:55Z10 MO AGO

Reserved

2025-07-28

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Medium (CVSS 6.2)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weaknesses

• CWE-208Observable Timing DiscrepancyBase

Data version

5.1

Document digest

0cb7ed138861812dc06470d608b5260849daa5a3af42946baa74ad83d0f8f26a

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