Is CVE-2023-36328 in the CISA KEV catalog?

No. CVE-2023-36328 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-36328?

CVE-2023-36328 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2023-36328?

CVE-2023-36328 has an EPSS score of 1.25% (66th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-36328?

Upgrade libtommath on debian 11 to 1.2.0-6+deb11u1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2023-36328

CRITICAL

9.8

CVSS v3

NVD

Description

Integer Overflow vulnerability in mp_grow in libtom libtommath before commit beba892bc0d4e4ded4d667ab1d2a94f4d75109a9, allows attackers to execute arbitrary code and cause a denial of service (DoS).

CWE-190Integer Overflow

How to fix

Remediation Available

libtommathDebian

Fixed in:1.2.0-6+deb11u1CVE-2023-36328

Fixed in:1.2.0-6+deb12u1CVE-2023-36328

Fixed in:1.2.1-1CVE-2023-36328

libtommathUbuntu

Fixed in:0.42.0-1.2ubuntu0.1~esm1USN-6402-1

Fixed in:1.0.1-1ubuntu0.1~esm1USN-6402-1

Fixed in:1.2.0-3ubuntu0.1USN-6402-1

Fixed in:1.2.0-6ubuntu0.22.04.1USN-6402-1

Fixed in:1.2.0-6ubuntu0.23.04.1USN-6402-1

Fixed in:1.2.0-6ubuntu0.23.10.1USN-6402-2

libtommath0Ubuntu

Fixed in:0.42.0-1.2ubuntu0.1~esm1USN-6402-1

libtommath1Ubuntu

Fixed in:1.0.1-1ubuntu0.1~esm1USN-6402-1

Fixed in:1.2.0-3ubuntu0.1USN-6402-1

Fixed in:1.2.0-6ubuntu0.22.04.1USN-6402-1

Fixed in:1.2.0-6ubuntu0.23.04.1USN-6402-1

Fixed in:1.2.0-6ubuntu0.23.10.1USN-6402-2

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

Exploit Intelligence

1.25%probability of exploitation in 30 days

66thpercentile

Moderate risk: more likely to be exploited than 66% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory3

Other references1

lists.debian.org

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix
CVE-2019-11477	High	7.5	99%	-	Fix
CVE-2023-44443	High	7.8	94%	-	Fix
CVE-2014-0569	High	9.3	90%	-	-
CVE-2017-3599	High	7.5	90%	-	Fix
CVE-2023-21716	Critical	9.8	82%	-	Fix

Embed a live status badge for CVE-2023-36328

Markdown

[![CVE-2023-36328](https://tridentstack.com/cve/badge/CVE-2023-36328.svg)](https://tridentstack.com/cve/CVE-2023-36328)

HTML

<a href="https://tridentstack.com/cve/CVE-2023-36328"><img src="https://tridentstack.com/cve/badge/CVE-2023-36328.svg" alt="CVE-2023-36328"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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 2025-06-26.