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Fencer Intel
critical 9.8

CVE-2018-0488 json

ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0, when the truncated HMAC extension and CBC are used, allows remote attackers to…

published 2018-02-13 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-1311

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.8%
EPSS 4.8% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0, when the truncated HMAC extension and CBC are used, allows remote attackers to execute arbitrary code or cause a denial of service (heap corruption) via a crafted application packet within a TLS or DTLS session.

Patch / fix

  • arm mbed_tls 1.3.22, 2.1.10, 2.7.0
  • mbedtls Debian 14, Debian 13, Debian 12 2.7.0-2

debian advisories DEBIAN-CVE-2018-0488

  • mbedtls Ubuntu 16.04 LTS 2.2.1-2ubuntu0.3

ubuntu advisories UBUNTU-CVE-2018-0488

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • mbedtls-3 openSUSE Tumbleweed 3.6.6-1.1
  • mbedtls-2 openSUSE Tumbleweed 2.27.0-1.2
  • mbedtls Package Hub 12 1.3.19-11.1

opensuse advisories openSUSE-SU-2026:11119-1openSUSE-SU-2024:11043-1openSUSE-SU-2018:0488-1openSUSE-SU-2018:0491-1

  • mbedtls Alpine 3.24, Alpine 3.23, Alpine 3.22 +14 more 2.7.0-r0
  • mbedtls2 Alpine 3.24, Alpine 3.23, Alpine 3.22 +2 more 2.7.0-r0
  • mbedtls3 Alpine 3.24 2.7.0-r0

alpine advisories ALPINE-CVE-2018-0488

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • mbedtls Arch Linux 2.7.0-1

arch linux advisories AVG-617

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-0488 updated cvss 8.1

mbedtls: Risk of remote code execution when truncated HMAC is enabled

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.79% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • n/a ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.