Is CVE-2018-1311 in the CISA KEV catalog?

No. CVE-2018-1311 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-1311?

CVE-2018-1311 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2018-1311?

CVE-2018-1311 has an EPSS score of 9.50% (95th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-1311?

Upgrade xerces-c on debian 11 to 3.2.3+debian-2 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2018-1311

HIGHEPSS 95th pctl

8.1

CVSS v3

NVD

Description

The Apache Xerces-C 3.0.0 to 3.2.3 XML parser contains a use-after-free error triggered during the scanning of external DTDs. This flaw has not been addressed in the maintained version of the library and has no current mitigation other than to disable DTD processing. This can be accomplished via the DOM using a standard parser feature, or via SAX using the XERCES_DISABLE_DTD environment variable.

CWE-416Use After Free

How to fix

Remediation Available

xerces-cDebian

Fixed in:3.2.3+debian-2CVE-2018-1311

libxerces-c-samplesUbuntu

Fixed in:3.1.1-5.1+deb8u4ubuntu0.1~esm2USN-6590-1

Fixed in:3.1.1-5.1+deb8u4ubuntu0.1~esm1USN-6579-1

Fixed in:3.1.3+debian-1ubuntu0.1~esm2USN-6579-1

Fixed in:3.1.3+debian-1ubuntu0.1~esm3USN-6590-1

Fixed in:3.2.0+debian-2ubuntu0.1~esm3USN-6590-1

Fixed in:3.2.0+debian-2ubuntu0.1~esm2USN-6579-1

Fixed in:3.2.2+debian-1ubuntu0.2USN-6590-1

Fixed in:3.2.2+debian-1ubuntu0.1USN-6579-2

Fixed in:3.2.3+debian-3ubuntu0.1~esm1USN-6579-2

Fixed in:3.2.3+debian-3ubuntu0.1USN-6590-1

Fixed in:3.2.4+debian-1ubuntu0.23.04.1USN-6579-2

Fixed in:3.2.4+debian-1ubuntu0.23.10.1USN-6579-2

libxerces-c3.1Ubuntu

Fixed in:3.1.1-5.1+deb8u4ubuntu0.1~esm1USN-6579-1

Fixed in:3.1.1-5.1+deb8u4ubuntu0.1~esm2USN-6590-1

Fixed in:3.1.3+debian-1ubuntu0.1~esm2USN-6579-1

Fixed in:3.1.3+debian-1ubuntu0.1~esm3USN-6590-1

libxerces-c3.2Ubuntu

Fixed in:3.2.0+debian-2ubuntu0.1~esm2USN-6579-1

Fixed in:3.2.0+debian-2ubuntu0.1~esm3USN-6590-1

Fixed in:3.2.2+debian-1ubuntu0.2USN-6590-1

Fixed in:3.2.2+debian-1ubuntu0.1USN-6579-2

Fixed in:3.2.3+debian-3ubuntu0.1~esm1USN-6579-2

Fixed in:3.2.3+debian-3ubuntu0.1USN-6590-1

Fixed in:3.2.4+debian-1ubuntu0.23.04.1USN-6579-2

Fixed in:3.2.4+debian-1ubuntu0.23.10.1USN-6579-2

xerces-cUbuntu

Fixed in:3.1.1-5.1+deb8u4ubuntu0.1~esm2USN-6590-1

Fixed in:3.1.1-5.1+deb8u4ubuntu0.1~esm1USN-6579-1

Fixed in:3.1.3+debian-1ubuntu0.1~esm2USN-6579-1

Fixed in:3.1.3+debian-1ubuntu0.1~esm3USN-6590-1

Fixed in:3.2.0+debian-2ubuntu0.1~esm3USN-6590-1

Fixed in:3.2.0+debian-2ubuntu0.1~esm2USN-6579-1

Fixed in:3.2.2+debian-1ubuntu0.2USN-6590-1

Fixed in:3.2.2+debian-1ubuntu0.1USN-6579-2

Fixed in:3.2.3+debian-3ubuntu0.1USN-6590-1

Fixed in:3.2.3+debian-3ubuntu0.1~esm1USN-6579-2

Fixed in:3.2.4+debian-1ubuntu0.23.04.1USN-6579-2

Fixed in:3.2.4+debian-1ubuntu0.23.10.1USN-6579-2

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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

9.50%probability of exploitation in 30 days

95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Patch1

oracle.com

Vendor Advisory1

lists.apache.org

Third-Party Advisory9

Issue Tracking3

Other references1

lists.fedoraproject.org

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	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 2025-11-04.