Is CVE-2018-7186 in the CISA KEV catalog?

No. CVE-2018-7186 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-7186?

CVE-2018-7186 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2018-7186?

CVE-2018-7186 has an EPSS score of 3.47% (88th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-7186?

Upgrade leptonlib on debian 11 to 1.75.3-2 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2018-7186

CRITICALEPSS 88th pctl

9.8

CVSS v3

NVD

Description

Leptonica before 1.75.3 does not limit the number of characters in a %s format argument to fscanf or sscanf, which allows remote attackers to cause a denial of service (stack-based buffer overflow) or possibly have unspecified other impact via a long string, as demonstrated by the gplotRead and ptaReadStream functions.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

leptonlibDebian

Fixed in:1.75.3-2CVE-2018-7186

leptonlibUbuntu

Fixed in:1.70.1-1ubuntu0.1~esm1USN-4819-1

Fixed in:1.73-1ubuntu0.1~esm1USN-4819-1

liblept4Ubuntu

Fixed in:1.70.1-1ubuntu0.1~esm1USN-4819-1

liblept5Ubuntu

Fixed in:1.73-1ubuntu0.1~esm1USN-4819-1

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

3.47%probability of exploitation in 30 days

88thpercentile

Elevated risk: more likely to be exploited than 88% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory3

Other references1

security.gentoo.org

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.