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Fencer Intel
critical 9.8

CVE-2018-0487 json

ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0 allows remote attackers to execute arbitrary code or cause a denial of service…

published 2018-02-13 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-1310

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.3%
EPSS 3.3% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0 allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow) via a crafted certificate chain that is mishandled during RSASSA-PSS signature verification 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-2018-0487

  • mbedtls Ubuntu 16.04 LTS 2.2.1-2ubuntu0.3

ubuntu advisories UBUNTU-CVE-2018-0487

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-2018-0487

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-2018-0487 updated cvss 8.1

mbedtls: Risk of remote code execution when verifying RSASSA-PSS signatures

  • 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

3.26% chance of exploitation in the next 30 days, higher than 88% 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
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.