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Vulnerability record · CVE-2018-0488 · published 13 February 2018

CVE-2018-0488: Arm mbed tls out-of-bounds write vulnerability

Arm · Mbed Tls

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.

9.8 CVSS 3.0 Critical EPSS 4.8% · top 8.4% CWE-787 · Out-of-bounds write
9.8CVSS 3.0 base score, v2 7.5
4.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/103057 Third Party AdvisoryVDB Entry
https://security.gentoo.org/glsa/201804-19 Third Party Advisory
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-01 MitigationVendor Advisory
https://usn.ubuntu.com/4267-1/
https://www.debian.org/security/2018/dsa-4138 Third Party Advisory
https://www.debian.org/security/2018/dsa-4147 Third Party Advisory
http://www.securityfocus.com/bid/103057 Third Party AdvisoryVDB Entry
https://security.gentoo.org/glsa/201804-19 Third Party Advisory
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-01 MitigationVendor Advisory
https://usn.ubuntu.com/4267-1/
https://www.debian.org/security/2018/dsa-4138 Third Party Advisory
https://www.debian.org/security/2018/dsa-4147 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-0488), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.