Is CVE-2017-6920 in the CISA KEV catalog?

No. CVE-2017-6920 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-6920?

CVE-2017-6920 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2017-6920?

CVE-2017-6920 has an EPSS score of 20.48% (97th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-6920?

Upgrade drupal to 8.3.4 or later.

CVE & CISA-KEV Catalog

CVE-2017-6920

CRITICALEPSS 97th pctl

9.8

CVSS v3

NVD

Description

Drupal core 8 before versions 8.3.4 allows remote attackers to execute arbitrary code due to the PECL YAML parser not handling PHP objects safely during certain operations.

CWE-19

How to fix

Remediation Available

drupalNVD

Affected:>= 8.0.0, < 8.3.4Fixed in:8.3.4CVE-2017-6920derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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

20.48%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

Patch1

drupal.org

Third-Party Advisory2

Related Vulnerabilities

Other CWE-19 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-5477	High	7.8	91%	-	Fix
CVE-2014-9034	Medium	5.0	83%	-	Fix
CVE-2016-4977	High	8.8	79%	-	-
CVE-2016-3236	Critical	9.8	78%	-	-
CVE-2014-7141	Medium	6.4	76%	-	Fix
CVE-2015-5374	High	7.8	74%	-	-

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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.