How severe is CVE-2025-48965?

CVE-2025-48965 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2025-48965 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-48965?

CVE-2025-48965 affects Arm Mbed Tls. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-48965?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-48965 have an EU (EUVD) identifier?

Yes. CVE-2025-48965 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22031.

When was CVE-2025-48965 published?

CVE-2025-48965 was published on 2025-07-20 and last updated on 2026-06-17.

CVE-2025-48965

CVE-2025-48965 is a medium-severity vulnerability in Arm Mbed Tls with a CVSS 3.x base score of 4.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: Medium (CVSS 3.x base score 4.0)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-22031
Weakness: CWE-476
Affected product: Arm Mbed Tls
Published: 2025-07-20
Last modified: 2026-06-17

Description

Mbed TLS before 3.6.4 has a NULL pointer dereference because mbedtls_asn1_store_named_data can trigger conflicting data with val.p of NULL but val.len greater than zero.

Frequently asked questions

What is CVE-2025-48965?: Mbed TLS before 3.6.4 has a NULL pointer dereference because mbedtls_asn1_store_named_data can trigger conflicting data with val.p of NULL but val.len greater than zero.
How severe is CVE-2025-48965?: CVE-2025-48965 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2025-48965 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-48965?: CVE-2025-48965 affects Arm Mbed Tls. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-48965?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-48965 have an EU (EUVD) identifier?: Yes. CVE-2025-48965 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22031.
When was CVE-2025-48965 published?: CVE-2025-48965 was published on 2025-07-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*

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