Is CVE-2018-0488 in the CISA KEV catalog?

No. CVE-2018-0488 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-0488?

CVE-2018-0488 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2018-0488?

CVE-2018-0488 has an EPSS score of 4.88% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-0488?

Upgrade mbedtls on debian 11 to 2.7.0-2 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2018-0488

CRITICALEPSS 91th pctl

9.8

CVSS v3

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.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

mbedtlsDebian

Fixed in:2.7.0-2CVE-2018-0488

libmbedcrypto0Ubuntu

Fixed in:2.2.1-2ubuntu0.3USN-4267-1

libmbedtls10Ubuntu

Fixed in:2.2.1-2ubuntu0.3USN-4267-1

libmbedx509-0Ubuntu

Fixed in:2.2.1-2ubuntu0.3USN-4267-1

mbedtlsUbuntu

Fixed in:2.2.1-2ubuntu0.3USN-4267-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

4.88%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Vendor Advisory1

tls.mbed.org

Third-Party Advisory4

Other references1

usn.ubuntu.com

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.