UBUNTU-CVE-2025-49087

See a problem?
Please try reporting it to the source first.

Source

https://ubuntu.com/security/CVE-2025-49087

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-49087.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-49087

Upstream

CVE-2025-49087

Published

2025-07-20T19:15:00Z

Modified

2026-05-20T16:23:32Z

Severity

4.0 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N CVSS Calculator
3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

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.

References

Affected packages

Ubuntu:25.10 / mbedtls

Package

Name: mbedtls
Purl: pkg:deb/ubuntu/mbedtls?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.6.2-3ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libmbedcrypto16",
            "binary_version": "3.6.2-3ubuntu1"
        },
        {
            "binary_name": "libmbedtls21",
            "binary_version": "3.6.2-3ubuntu1"
        },
        {
            "binary_name": "libmbedx509-7",
            "binary_version": "3.6.2-3ubuntu1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-49087.json"

Ubuntu:26.04:LTS / mbedtls