How severe is CVE-2025-49087?

CVE-2025-49087 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 low, integrity none, and availability none.

Is CVE-2025-49087 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-49087?

CVE-2025-49087 affects Trustedfirmware Mbed Tls. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-49087?

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

Does CVE-2025-49087 have an EU (EUVD) identifier?

Yes. CVE-2025-49087 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22030.

When was CVE-2025-49087 published?

CVE-2025-49087 was published on 2025-07-20 and last updated on 2026-06-17.

CVE-2025-49087

CVE-2025-49087 is a medium-severity vulnerability in Trustedfirmware 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-385.

Key facts

Severity: Medium (CVSS 3.x base score 4.0)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-22030
Weakness: CWE-385
Affected product: Trustedfirmware Mbed Tls
Published: 2025-07-20
Last modified: 2026-06-17

Description

In Mbed TLS 3.6.1 through 3.6.3 before 3.6.4, a timing discrepancy in block cipher padding removal allows an attacker to recover the plaintext when PKCS#7 padding mode is used.

Frequently asked questions

What is CVE-2025-49087?: In Mbed TLS 3.6.1 through 3.6.3 before 3.6.4, a timing discrepancy in block cipher padding removal allows an attacker to recover the plaintext when PKCS#7 padding mode is used.
How severe is CVE-2025-49087?: CVE-2025-49087 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 low, integrity none, and availability none.
Is CVE-2025-49087 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-49087?: CVE-2025-49087 affects Trustedfirmware Mbed Tls. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-49087?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-49087 have an EU (EUVD) identifier?: Yes. CVE-2025-49087 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22030.
When was CVE-2025-49087 published?: CVE-2025-49087 was published on 2025-07-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:trustedfirmware:mbed_tls:*:*:*:*:*:*:*:*

More vulnerabilities in Trustedfirmware Mbed Tls

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