CVE-2019-5086

HIGHEPSS 87th pctl

8.8

CVSS v3

Description

An exploitable integer overflow vulnerability exists in the flattenIncrementally function in the xcf2png and xcf2pnm binaries of xcftools, version 1.0.7. An integer overflow can occur while walking through tiles that could be exploited to corrupt memory and execute arbitrary code. In order to trigger this vulnerability, a victim would need to open a specially crafted XCF file.

CWE-680 CWE-190Integer Overflow CWE-787Out-of-bounds Write

How to fix

Remediation Available

xcftoolsUbuntu

Fixed in:1.0.7-5ubuntu0.1~esm1USN-5988-1

This Ubuntu release reached end-of-life on 2021-04-02.

Fixed in:1.0.7-6ubuntu0.1USN-5988-1

This Ubuntu release reached end-of-life on 2023-05-31. Extended security maintenance is available until 2028-04-01.

Fixed in:1.0.7-6ubuntu0.20.04.1USN-5988-1

This Ubuntu release reached end-of-life on 2025-05-31. Extended security maintenance is available until 2030-04-02.

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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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

3.15%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Exploit2

Third-Party Advisory2

Related Vulnerabilities

Other CWE-680 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-24834	High	7.0	41%	-	Fix
CVE-2021-32761	High	7.5	38%	-	Fix
CVE-2020-6116	High	7.8	28%	-	-
CVE-2021-40417	Critical	9.8	16%	-	-
CVE-2021-32628	High	7.5	14%	-	Fix
CVE-2021-30354	High	8.6	8.4%	-	-

Common questions

How do I fix CVE-2019-5086?

Upgrade xcftools on ubuntu 16.04 to 1.0.7-5ubuntu0.1~esm1 or later.

Is CVE-2019-5086 being actively exploited?

Not that we know of. CVE-2019-5086 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 3.2% is the estimated probability that it will be exploited in the next 30 days. That is higher than 87% of all scored CVEs.

How severe is CVE-2019-5086?

CVE-2019-5086 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2019-5086 affect?

Published advisories record a fix for xcftools (Ubuntu). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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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 2026-06-17.