Is CVE-2017-18926 in the CISA KEV catalog?

No. CVE-2017-18926 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-18926?

CVE-2017-18926 has a CVSS v3 base score of 7.1 (HIGH).

What is the EPSS score for CVE-2017-18926?

CVE-2017-18926 has an EPSS score of 3.08% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-18926?

Upgrade raptor2 on debian 11 to 2.0.14-1.1 or later. Fixes are available for 6 affected products.

CVE & CISA-KEV Catalog

CVE-2017-18926

HIGHEPSS 86th pctl

7.1

CVSS v3

NVD

Description

raptor_xml_writer_start_element_common in raptor_xml_writer.c in Raptor RDF Syntax Library 2.0.15 miscalculates the maximum nspace declarations for the XML writer, leading to heap-based buffer overflows (sometimes seen in raptor_qname_format_as_xml).

CWE-787Out-of-bounds Write

How to fix

Remediation Available

raptor2Debian

Fixed in:2.0.14-1.1CVE-2017-18926

libraptor1Ubuntu

Fixed in:1.4.21-11ubuntu0.1~esm1USN-7868-1

libraptor2-0Ubuntu

Fixed in:2.0.14-1ubuntu0.16.04.1USN-4630-1

Fixed in:2.0.14-1ubuntu0.18.04.1USN-4630-1

Fixed in:2.0.15-0ubuntu1.20.04.1USN-4630-1

raptorUbuntu

Fixed in:1.4.21-11ubuntu0.1~esm1USN-7868-1

raptor-utilsUbuntu

Fixed in:1.4.21-11ubuntu0.1~esm1USN-7868-1

raptor2Ubuntu

Fixed in:2.0.14-1ubuntu0.16.04.1USN-4630-1

Fixed in:2.0.14-1ubuntu0.18.04.1USN-4630-1

Fixed in:2.0.15-0ubuntu1.20.04.1USN-4630-1

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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityHigh

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

Exploit Intelligence

3.08%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Patch2

Third-Party Advisory7

Other references3

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.