Is CVE-2018-11243 in the CISA KEV catalog?

No. CVE-2018-11243 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-11243?

CVE-2018-11243 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2018-11243?

CVE-2018-11243 has an EPSS score of 2.50% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-11243?

Upgrade upx-ucl on debian 11 to 1.03+repack-5 or later.

CVE & CISA-KEV Catalog

CVE-2018-11243

HIGHEPSS 83th pctl

7.8

CVSS v3

NVD

Description

PackLinuxElf64::unpack in p_lx_elf.cpp in UPX 3.95 allows remote attackers to cause a denial of service (double free), limit the ability of a malware scanner to operate on the entire original data, or possibly have unspecified other impact via a crafted file.

CWE-415

How to fix

Remediation Available

upx-uclDebian

Fixed in:1.03+repack-5CVE-2018-11243

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 VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.50%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Exploit2

Release Notes1

github.com

Other references6

Related Vulnerabilities

Other CWE-415 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-25136	Medium	6.5	90%	-	Fix
CVE-2018-0101	Critical	10.0	87%	-	Fix
CVE-2003-0545	Critical	9.8	85%	-	Fix
CVE-2019-3829	Medium	5.3	59%	-	Fix
CVE-2026-33824	Critical	9.8	56%	-	Fix
CVE-2021-3407	Medium	5.5	50%	-	Fix

Embed a live status badge for CVE-2018-11243

Markdown

[![CVE-2018-11243](https://tridentstack.com/cve/badge/CVE-2018-11243.svg)](https://tridentstack.com/cve/CVE-2018-11243)

HTML

<a href="https://tridentstack.com/cve/CVE-2018-11243"><img src="https://tridentstack.com/cve/badge/CVE-2018-11243.svg" alt="CVE-2018-11243"></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 2025-04-11.